Author's Note: Okay, guys. Here comes the smut! Hope it's alright and that you all enjoy the end of the story. Thank you so much for reading!

The healing of Evie's wound accelerates rapidly over the next few days, and she is able to walk longer distances without too much pain.

A few nights later, she tells her brother, "I want to climb. Let's go up to the roof."

"I don't know, Evie… That's a lot of—"

"Come on, Jacob. Pleeeaaaase," she whines loudly, tugging on his jacket.

"Oh, alright," he sighs. "Just can't say no to that pouty face, can I, lass?"

Evie shakes her head rapidly with excitement, gripping his hand. She follows him onto the small balcony and lets him ascend the wall of the building first. Once he's at the top, looking down at her, she nods her head to let him know she's ready and begins to follow him. As soon as she nears the roof, Jacob extends his hand to catch her, knowing that it would likely be too painful for her to pull herself up on her own.

Once securely on the roof, Evie sits down, dangling her feet over the edge. Her brother settles beside her and wraps his arm around her shoulder.

"Just in time for the sunset," Jacob muses, looking out at the city.

The usual smog from the industrial boom surrounding them is only somewhat present, making this night the perfect one for watching the sun escape.

Evie comments, "The sky is lovely tonight," before reaching over and taking her brother's hand without looking.

"As are you, Evie," he replies, also without looking at her.

This causes her to turn her head to face him, but he stays as still as stone, even as he feels her piercing gaze blazing through him. Jacob's chest is swollen, expanding and contracting in an impossibly erratic rhythm. But he manages to maintain a calm, collected expression, at least outwardly. Inside, his heart is throbbing, making him feel as though his breaths will stop at any moment.

His sister doesn't know how to reply to this, or what to make of his words, so she simply watches him. Soon, she realizes that his tranquility is a front. His expression isn't vacant or entranced; it's focused and hard like steel, so Evie knows that he's forcing himself to be calm.

"Jacob," she says softly, not releasing his hand. When he doesn't reply or look at her, she presses, "Jacob Frye."

At last, he turns, meeting her gaze. It continues to blaze through him, burning everything in his body and making his skin crawl, and he quickly discovers the underlying cause: his overwhelming desire to touch her. Her hand is not enough, but he squeezes it and tries to pretend that this touch is satisfactory. Jacob's longing is not fulfilled by this gesture, and he begins to understand that the desire itself may be an unquenchable thirst, something quite out of reach. The cure for this fire is far beyond forbidden.

"Jacob, what's wrong?" Evie asks, stroking his cheek with the hand that is not being held captive by her brother's.

He blinks a few times, trying to gather his thoughts, and eventually comes up with the words, "I'm alright, Evie."

This, of course, doesn't answer her question, and Evie is persistent, so she continues, "Why are you so reluctant to speak to me?"

Jacob can tell she's growing flustered, and this is the last thing he wants, but he finds himself unable to speak, the words forming a knot in his throat.

"I wish you and I could grow closer than this," Evie sighs, after some frustrating silence. "As close as we've become lately, you still feel distant. You feel so… far away from me…" When he says nothing in reply, she finishes, "I'm going back inside."

Knowing that she is either irritated or hurt by his lack of response, Jacob watches as Evie tries to stand. When she slips, losing her footing as she shifts her weight, he jumps up and grabs her arm, pulling her back until she falls into his arms, rather than forward off the roof. She gasps, shocked by the fall.

"I've got you," he says quickly, smoothing her hair.

She's nearly in his lap, sitting directly in front of him, and his strong arms are wrapped securely around her from behind, holding her back against his chest. His voice is calm now, but his heart is racing, struck by the fear of her near disastrous fall.

Evie sighs and shuts her eyes, dropping her head back onto his shoulder. As he continues to smooth her hair, her breathing slows, and she begins to relax against him. The emotional walls Jacob constructs cause her to feel conflicted about their relationship. On the one hand, he's exposed himself to her more in the past few weeks than he ever has before. On the other hand, he continues to maintain a large distance when it comes to expressing his inner thoughts. All she can do is hope that the bond between them will continue to grow, and that he'll let her in soon.

"We should go inside," Jacob says, just as the sun is about to disappear completely behind the buildings spread out before them. "It's going to get cold."

"You worry too much," his sister tells him, remaining still.

"Only about you, my dear." Evie whines when he adjusts and starts to pull her to her feet, but he presses onward and scolds her, "Now, now, Miss Frye. Don't be stubborn."

Huffing in protest, she allows him to hop down onto the lower balcony and help her down next, carefully putting his hands on her waist to steady her once they're standing. This brings their faces dangerously close together, and Evie feels the burning sensation of desire, one that matches Jacob's own.

Jacob looks at her, pained but unable to tear his gaze away from her beauty. She stares back into his eyes, only guessing at what he might be thinking, until his hand reaches up and slides behind the back of her neck, fingers threading through her hair.

But he pulls away abruptly and ushers her back inside.

"Go on," he says. "It's cold."

But the only shiver Evie feels is from the ghost of his touch.

A week or so later, sitting on the lounge, Evie addresses her brother, "Jacob… I'm ready to go back."

"Evie, no. You're still—"

"I can move freely without pain now. I'm fine."

"Regardless. It's too soon. You're still healing, and—"

"I'm going back. Besides, I'm eager to see Henry."

Jacob's lips part as he stares at his sister, his stomach dropping.

She looks confused by his expression of discomfort and asks, "Jacob? What's wrong?"

"Huh? Nothing. Nothing. I just…" Evie waits, and Jacob grows even more uncomfortable, until finally, he admits, "I just don't understand your infatuation with him."

"Infatuation? With Henry?" Evie laughs. "Hardly. He's a friend, Jacob. A dear, dear friend. And besides… What's it to you?"

"What? Nothing. I don't care. I mean, if you want to be with some cocky, kiss-ass—"

"Since when do you feel that way about Henry? You've never said those things before. He's sweet… caring… polite. Everything a gentleman should be. And he's far from cocky."

"Yeah, well…"

"Well what? Explain yourself."

"I just meant…"

"Jacob Frye. Spit it out this instant, before I get up and slap that dumbfounded look right off your pretty face."

Blinking, Jacob replies, "You think my face is pretty?"

"Is that all you got from what I just said?!"

"Well, no, but—"

"What is wrong with you, Jacob? How can you talk about your friends like that? You've always liked Henry. What changed?"

"Nothing! He's just…"

"What happened between you two?"

"Nothing, Evie. I just know he has feelings for you, and—"

"Wait, what? What makes you think that?"

"Because I'm a guy, Evie! I just know!"

Flustered, Jacob sits down on the couch beside his sister and hangs his head in his hands.

"Jacob?"

"Yeah."

"What's the matter? What's going on with you?"

"I'm fine, Evie. I'm fine. I think I just need to go for a walk."

On shaky legs, the man stands and moves toward the door, but his sister reaches out her hand and firmly grabs his wrist.

"Sit. Down."

But he shrugs her off, tearing his arm away, and hurries out the door, forgetting his jacket. Evie is up in an instant, rushing out after him.

"Jacob!" she cries, reaching him and gripping his arm. "Jacob, stop."

"Evie. Go back inside."

"Don't tell me what to do! You're not Father!"

"Stop saying that!"

Their eyes are matching steel as they stare each other down, the heat of their frustration radiating between them. After some silence, Jacob realizes that Evie is not prepared to speak again, so he turns around defiantly and begins to walk away from her.

She catches up to him quickly, moving faster than she has in weeks, and announces, "I'm coming with you."

"You don't even know where I'm going."

"You're angry. You're going to the fight club."

"I'm not angry!" Jacob shouts, finally stopping in his tracks.

"Let me come with you."

"Ugh!" he cries. "Alright already! You're relentless. Let's just go back to the train."

Victorious, Evie grins and follows behind him as he makes his way to the station.

"I wonder what missions we'll have waiting for us. We've been gone for quite some time. I wonder if there have been any developments with—"

"Will you stop talking?" Jacob snaps. "I'm tired, and you're getting on my nerves."

Evie sighs softly, "It is incredibly unfortunate to see you turning back into your usual self. I was quite enjoying the change."

This stops Jacob again. At first, he stares blankly ahead as he soaks in her words. She sounds sad, and he hates it. Then, he turns to face her.

"I'm sorry. I don't know what came over me."

"I do…" Evie tells him slowly. When he looks exceedingly confused, she explains, "You're jealous."

"What?"

"Of Henry."

"That's ridiculous."

"You're jealous of the attention I give him, and you're turning green with envy at the thought of me sharing my time between you two."

"That's stupid. You don't know what you're talking about."

"You are. You're jealous. I know you, Jacob, and I've never seen you so envious."

"I'm not envious!" Jacob howls, nearly stomping his foot like a child as he protests his sister's assertion.

"And what if I told you that I miss him? That I can't wait to see him? That he's special to me?"

Jacob's face turns red almost instantly as he stares her down. Hot tears, formed from the jealousy Evie spoke of, well in his eyes. He can hardly bear the thought of her feeling so emotionally connected to someone else. The past weeks alone with her have been the best he's had for as long as he can remember, and thinking of her throwing that away for Henry sets Jacob's insides on fire.

"I thought so," Evie says flippantly, then steps ahead of him, making her way through the busy streets toward the train station.

Jacob freezes, stunned into silence as she walks away, then finally comes to his senses and runs after her, pushing civilians out of the way as he moves through the crowds between them.

"Evie!" he shouts after her, but she doesn't turn her head.

She does slow down, though, so he knows she's heard him. He catches up quickly, grabbing her arm to hold her still.

"Alright," he says. "I'm jealous."

Evie's eyes go wide from his confession, surprised not that she was correct (that was already obvious) but that he was willing to confess such. It takes her some time to choose her next words. The people surrounding them fade to a blur as they stare at each other, trying to say silently the words that are so difficult to speak aloud.

"You needn't be," she finally tells him, breaking the tension hanging between them. "As I've already told you, he's a dear friend, and that is all. I desire nothing more from him, Jacob." He looks relieved – he certainly can't hide it – but he still doesn't move closer, so Evie adds, "Henry will never be you, Jacob."

"What does that mean?"

"It means that no one in this world could replace my dearest brother."

"I'm your only brother," Jacob huffs, crossing his arms.

Evie replies with a smile, "Exactly."

They walk to the train station and board the train together. As they enter the train, Jacob reaches out his hand to help his sister up onto the platform, and she takes it gratefully.

"Why, thank you, sir," she says brightly. "How kind of you."

He smirks, loving her exaggerated reaction, and kisses her on the cheek as he ushers her toward the lounge.

Once sitting, he asks, "You alright? Any pain?"

"Yes, Jacob. I'm perfectly fine. No pain."

Again, Jacob smiles, saying, "Good," and planting a chaste kiss to his sister's temple.

Evie savors the warm touch of his lips against her skin and shuts her eyes briefly. When he sees this, Jacob wraps his arm protectively around the young woman's shoulders and pulls her just a little bit closer, kissing the top of her head as she leans it back against his shoulder.

After some time, she comments, "It's good to be back. Now, let's find out what we've missed, yeah?"

When Evie begins to stand, though, Jacob grabs her hand and pulls her back down, saying, "Wait a moment."

She looks into his eyes, trying to understand why he'd want to simply sit there when they'd come all that way to find out the status of their current missions. Jacob responds to her confusion by reaching out his hand and threading his fingers in her dark hair, unintentionally tickling the back of her neck with his nails. Evie sighs when she feels this, and once again, her eyes fall shut.

"Evie," Jacob whispers. When she doesn't open her eyes or respond, he confesses quietly, "I'm so glad you're alright. I'm so glad you're still here with me."

This causes her eyes to flutter open slowly, and she looks at her brother with concern, her brow furrowing.

"Jacob," she sighs. "I love you."

His heart stops, and although his instinct is to drop his gaze to hide his surprise, he cannot tear his eyes away from hers.

"I… I love you too, Evie…" he manages, stroking his thumb over her cheek.

Jacob leans in slowly, and at first, Evie's not sure exactly why, but when he licks his lips, she realizes. But his conviction wavers, and he starts to pull away. His sister stops him, though, reaching behind his head to cup the back of his neck and pull him closer.

Then, their lips are crashing together, like water breaking through a dam, an overwhelming rush of what has been building between them for weeks.

At first, Jacob is stunned. But Evie is all hunger and want, needing to taste all of him. Then, Jacob freezes as reality crashes through him and collides with his deepest fantasies.

"Fuck," he gasps, jerking himself away. "Fuck. I'm so sorry. S-So sorry, Evie."

He can barely get the words out, but once he does, he stands and turns his back on her, taking several quick strides away from her toward the door to the next train car. His sister is on him in an instant, leaping out of her seat and nearly diving for his hand.

She grips it in an iron vice, holding him back, and cries, "Jacob, wait!"

Jacob turns on his heels and finds her lips instantly crashing against his once again, holding him against her. His arms slide around her with a will of their own, pressing her closer to him as he kisses her with newly unrestrained passion.

"Oh, God, Evie," Jacob groans against his sister's quivering lips, after several minutes of clashing teeth and tangling tongues.

There is so much he needs to tell her. So much he needs to say. But none of it is going to come out now. The only thing he can do is kiss her again, his mouth hot and needy as it tastes hers. He vows silently to taste every corner of her mouth and to worship every inch of her body, if she'll let him.

"Jacob," Evie gasps, feeling the weight of his body press hers against the vibrating wall of the train.

His weight holding her against the wall isn't all she can feel. There's something else too. Something that startles her.

His erection is pressing against her hip, straining against the fabric of his trousers. As soon as she registers this, she gasps again in surprise. But his loving assault on her lips doesn't stop, and he hungrily swallows her breaths as he moans into the kiss. Evie finds herself immeasurably grateful that his reluctance has subsided. Only when Jacob feels her wandering hands pressing firm against the crotch of his pants does he break his mouth away from hers.

"Evie, wait," he says breathlessly. "Are you—"

But she silences him with her mouth, kissing him just as hungrily as he had been kissing her moments before, and rubs the space between his legs firmly with her palms, making him tilt his head back and moan softly. His neck is exposed, and her mouth is on it in an instant, sucking on his pulse point, thirsty for the taste of his skin. When his next moan comes out at a louder volume, Evie is encouraged enough to grope blindly for the clasp of his trousers. As soon as she finds it, it is undone by her nimble fingers.

Jacob gasps as his sister's hand reaches into the waistband of his undergarments and pulls out his erection, all eagerness and confidence. He's so hard that it hurts, has been for so long, and he needs it so bad that there is no energy left in him to protest. Nothing left to help him resist his own forbidden desires. But Evie… Evie shares them, he reasons, pressing himself into her hand. She wants this too.

"Gods. Oh, gods," the older twin pants, as Evie pumps him steadily, squeezing precum from the tip of his penis.

When the man's forehead hits the wall of the train just above her shoulder, Evie releases his length to run her fingers through his hair, husking in his ear, "Do it, Jacob."

Inhibitions crushed by her command, Jacob wastes no more time gripping her roughly behind her thighs and lifting her against the wall, shoving her skirt up past her hips. She knows what to do next and wraps her legs around his waist as he lines himself up with her entrance and pushes in forcefully, making her cry out.

"Jacob!" she screams, her walls stretched by his girth as he thrusts into her rapidly.

"Oh, fuck," Jacob curses, bucking wildly, fucking her against the wall of the train.

He has to steady himself with one hand against the wall to keep them upright, as the train offers only a rough, bumpy ride that threatens to make them lose their footing. But he is so distracted by his pleasure that he hardly cares, his erection completely sheathed by his sister's precious heat. Evie feels similarly as her head falls back against the wall and her eyes squeeze shut. She bucks against him, just as wildly, roughly meeting him thrust for thrust.

"Uuugh," the man groans with his next movement. "Evie. I'm going to… Gonna…"

"Yes! Jacob! Yes."

When she feels him pulsing inside her, his heat shattering her from the inside, her walls clench down, not only signaling her own orgasm, but also prolonging his. As if it will never end, Jacob continues to empty himself into her, movements unceasing, as the ripples of her orgasm surround him.

Shortly after they've finished coming, Jacob unhooks her legs from around his waist and eases her back down. Both gasping for breath, they embrace each other, sweat soaking their clothes as they savor the aftershocks of their first lovemaking.

The next night, when they are finally alone again, this time in their flat, the older Frye twin lowers his sister onto her bed and crawls between her legs.

"I want to take my time with you," Jacob tells Evie, brushing a few stray strands of hair away from her face as he stares lovingly into her eyes.

She can't speak. Everything in her body is on fire, and all she needs is to feel him again, feel him filling her, stretching her, making love to her. Fast and rough in a train car is one thing. Slow and passionate in bed is quite another.

As promised, Jacob does take his time as they undress. Once naked, he resumes his position between her firm, toned thighs. He doesn't break her gaze as he rubs his erection between her legs, against her clit, making her gasp.

"Jacob," she breathes, lifting her hips involuntarily.

He kisses her slowly, savoring the taste, and explores her mouth with his tongue. Gently, he rocks his hips forward and back, allowing his shaft to rub her between her legs without entering her, until finally, Evie is panting and writhing beneath him.

At last, she pleads, "Inside me, Jacob."

Pressing his lips firmly to her forehead, Jacob enters her, carefully sheathing himself in her dripping core. He slides in easily, and she drips and leaks all over him, so ready for him that she feels she might burst. Quickly, Jacob realizes that, more than anything, he loves the sound she makes when he enters her.

His hips move forward and back, this time with his length inside her, stroking her walls with the pulsing veins of his engorged, aching cock. This time, his own pleasure takes a passenger seat while hers remains the driver of their lovemaking. Jacob's heart races as he tries to control himself and his animalistic desire, longing to please Evie more than himself. When he looks down at her, her eyes are squeezed tightly shut, and her face in contorted with pleasure. This is how he knows that what he's doing is working.

Experimentally, Jacob grips her behind her thighs and lifts her legs slightly, changing the angle of his penetration, and she instantly writhes beneath him with his next entrance, screaming out his name.

Then, Evie moans loudly, "Oh, God," and lifts her hips to meet him enthusiastically.

But his eyes are all love and adoration, and he steadies her hips with his hands, pressing them into the mattress to slow her.

"Easy," Jacob whispers, stroking her hair back.

Evie is panting heavily, pressing her hips up against him, but he is unwavering and persists in his slow, steady movements that are drawing out her pleasure.

"Please," she begs. "I need more."

"No," her brother counters softly. "You're going to come for me, just like this."

Again, his strong hands press her hips down, holding her still, and he moves inside her carefully, rocking his hips forward until she lets out an impassioned wail.

"Jacob," she sobs. "Please."

"Does this feel good?" Jacob teases, slowly drawing his length back and forth inside her.

"Yes. Yes."

"Good. That's what I want. To make you feel good."

But he's starting to unravel, and it isn't long before he feels the roar of his orgasm forming in his belly. Silently, he curses himself for getting there so quickly, and he does everything he can to hold back his pleasure.

Thankfully, just when he feels he might break, Evie gasps, "Jacob, I'm close."

"That's it, sweetheart. Just… like… that."

Between each word, Jacob pauses to move inside her, and on the last syllable, Evie screams and bucks hard against him, her walls clenching down on his shaft, squeezing him tightly, urging him to milk himself inside her.

And he does. His seed erupts, filling her, and he lets out a deep groan as he pushes into her once more, holding still as the last of his pleasure is poured into his sister's core.

"Fuck," Jacob gasps breathlessly, his forehead pressing against hers as his eyes fall shut. "Fuck. Evie. You darling, darling girl."

Evie blushes, and her brother shifts his weight slightly, his length softening inside her.

Before she can speak, Jacob adds, "I love you, Evie Frye."