As promised, here it is. Chapter 4, complete with a nice Fourtris... scene. This is my first time ever writing smut so I hope it's good. And I'm sorry if there are spelling mistakes or other errors. I wrote it lots of it whilst blushing and didn't feel brave enough to review it. So, I'm uploading it as-is.

PLEASE REVIEW & enjoy 4

Chapter 4

Tobias and I walk back to the dormitory, having just finished lunch. We spent the time eating and talking and laughing. It feels so good to laugh like that. Like we have normal lives. At least that's what it feels like. I'm not sure I've ever had a normal life.

I look at Tobias as we walk. He looks so content. Not the rigid, always alert person I knew back in Dauntless. But he is still just as strong, if not more. He has been taking such good care of me ever since I woke up, barely leaving my side. There is nothing romantic about giving your girlfriend a sponge bath, but it didn't bother him in the least. I wish everyone could see him like this. So protective, gentle, and caring. I feel a sudden overwhelming warm feeling. I love him. He is mine and I am his and I love him so much.

So caught up in my thoughts, I barely notice he makes a turn down a hall before the dormitory.

"Uh, where are we going?" I say, "The dormitory's that way." I point in the other direction.

He smiles. It's a sly, secretive smile. "I know. We're not going to the dormitory."

"What? Then where are we –?"

"Just wait." He replies, taking my hand in his.

We turn another corner and stop in front of a door. With his free hand, he pulls a key from his pocket. He turns to me and smiles.

"Welcome home." He says, handing me the key.

"Home? What… wait? Is this… ours?" I ask

"It's ours. I started the paperwork the day you woke up. I knew then that I wanted to live with you as a family. Because we are a family." He says, passionately looking deep into my eyes. "That is, if that's alright with you." He looks somewhere just below my eyes, shyly.

I take his face in my hands and he looks me in the eye again. As I search his face, all I see is love. Love for me and only me. When I was a quiet, unsure Abnegation girl, I never thought to dream of being loved by another person so much. It's overwhelming, and huge, and terrifying.

It's the best feeling in the world.

"Yes." I say softly, as I move my hands down and lock them loosely behind his neck. "I can't think of anything I want more."

He looks as if he is going to speak and then changes his mind. He puts his hands on my waist and pulls me closer to him. I close my eyes as his lips brush mine and feel him smile and the breath of a light, content laugh passes from his mouth to mine.

Slowly we kiss. It's one of those kisses that feels warm and mind-numbingly good. Sweet and slow like honey. The kind of kiss that drags you under and makes your head swim.

We resurface as we break the kiss. I open my eyes and for a split second we just stare at each other. I don't know what he's thinking in that brief moment, but I know I'm thinking I never want anyone else. Ever. For as long as I live.

That moment comes crashing down like a wave as we start again. This time passionate and fierce. I somehow manage to break away and fumble with the key. which I throw somewhere on the floor after I get the door open. As we continue kissing, we stumble through the fully-furnished living room into the bedroom where there is a queen-sized bed. That's all I really take in because at this moment my shirt is being lifted over my head by those skilled and careful hands. Those hands I have seen throw a knife at my head with perfect aim are now struggling to undo the button of my jeans. I laugh and steady his them. Before he can pull off my jeans, I lift his shirt over his head and run my hands over his beautiful body. His warm, olive skin. I can tell he's been spending any time he wasn't with me exercising (probably to take his mind of things) because he looks as amazing and firm as he did the first time I saw him without a shirt back in his Dauntless apartment.

I notice briefly how he still looks a little shy even though I've seen him bare-chested several times since then. But only a very little bit. We kiss again and he runs his hands through my hair and down my arms before gently pushing me backwards onto the soft bed. I lie there are he pulls off my jeans and then takes off his own. My heart is racing and I'm sure I'm blushing like crazy. I start to feel dizzy and self-conscious. We came so close to this moment before everything that happened at the compound. So close. This times it's going to happen. It's frustrating because I want this. I want this so badly. But I can't seem to break through the fog swirling in my mind.

"Four, wait." I say breathlessly, putting my hands on his arms as he leans over my half naked body. Far back in my mind I register that I just called him Four, something I don't often do.

"Are you okay? Do you want to slow down?" He looks concerned as he strokes my cheek.

"I just want to take in this moment," I sigh, running my fingers through his hair. I laugh, "God that sounds so cheesy."

He takes his hand away from my face and holds mine. "I want that too." He leans down close to my ear and whispers, "and that is pretty cheesy."

I laugh pull his face back to mine and kiss him. We kiss hard, our breaths hot and fast. I sit up and he reaches behind me to unclip my bra.

"You sure you want to do this?" He asks with a serious look on his face.

I put my face close to his. "Just touch me." I whisper.

And he does.

He rubs my breast and his hand feels so warm and good. I let out a small low sound.

We touch each other all over like we can't get enough of one another. He runs a hand down my thigh and over my underwear. He looks up at me as his hand freezes. I nod and he slowly puts his fingers under the waist band and then slides his hand in. His other hand is still massaging my breast and he moves his mouth down to the other.

Oh goddddd.

I am in heaven. I am writhing and moaning under him, not even caring about how ridiculous I sound.

He pulls his hand out of my panties and moves down. He pulls them all the way off and starts kissing up my thigh. He slowly kisses and sucks his way to my folds.

Fuck fuck fuuuuuuuck.

He starts slow. Licking and sucking. My groans encourage him and he delves his tongue deep inside me. I gasp. I have never felt this good in my entire life and I never want to feel anything else.

I put my hands on his head and tug gently on his hair. He continues and he lets out a low moan that seems to go through my whole body. I groan even louder then.

Though I have never had sex, I know from masturbating (…I heard about it from some Dauntless) when I'm getting close. I gently pull him up to me. Kissing him, I taste myself on his lips. I don't know who I've become since we were outside this apartment but I love it.

I pull away and breathlessly ask, "How did you do that?"

"I don't know. You sounded like you liked it so… I just kept doing it. Was it good?"

"It was amazing. Now your turn." I say as we kiss again, tongues swirling, breaths mixing.

I reach down to his underwear and tug them down. As we kiss, I wrap my hand around his hard dick. He moans. I have a feeling this is going to be an activity we do often…

I'm not gonna lie, I've wondered how big he was and I'm not disappointed. He seems to be about 7 inches, from my quick estimate. I run my hand up and down his shaft not exactly sure what I'm doing, but if his moans (God, his moaning is hot) are any indication, he's pretty happy with it. I take my hand off his cock and push him onto his back. I push myself up and make my way down. Going off of instinct and the glimpses I've caught of some unattended Dauntless girls' magazines, I take his cock into my mouth.

"Oh fuck! Triiiiis." He breathes, tugging at my hair.

I start at the tip, licking and sucking and make my way down the shaft, almost to the base before I start to gag a little. I have to sit up and cough.

"Are you alright?" Tobias asks worriedly

"I'm fine. Just got a little ambitious." I tell him.

I start again and this time I use my hands to work at the base and balls and use my mouth to kiss and suck and lick the rest. Pretty soon he's out of his mind groaning and moaning my name and fuck, it's turning me on so much and making me so wet.

"Tris, stop. I'm gonna cum." He tells me breathlessly. It's weird to hear him say that. Weird but also really hot.

I stop what I'm doing and ask, "Do you have a condom?"

He nods and looks to the floor. "It's in the back pocket of my jeans."

I raise my eyebrow at him. "Well, someone was quite confident about how this evening would go."

"I just… wanted to be prepared," He replies, grinning. "Now get the condom."

I reach down and fish through two of the pockets of his jeans before I feel something flat and smooth. I sit up and straddle Tobias' torso, his hands running up and down my thighs, while I carefully tear open the foil packet.

"Yeah… I don't know how to put that on you." I say, handing the unwrapped condom to him.

I sit on the bed next to him as he rolls the condom onto his hard dick.

"Someone's obviously practiced." I tease.

"Shut up." He says smiling as he pins me down and kisses me. He starts kissing my breasts as he uses one hand to guide his cock to my entrance. He moves it along the folds and up to my clit and I gasp and moan.

"Fuck me, Four. Now." I gasp.

He slowly slides his dick into my hole and we both freeze for a moment. It's slightly uncomfortable and I think he's making sure he did it right. I reach down and guide it in farther. We moan and he starts moving in and out. Slowly at first and then faster. We're kissing hard and fast and everything is sparks and fire. I move my hand down and rub my clit until he takes over and I move my hands to his hair and tangle my fingers in it. We're writhing and groaning and moaning one another's name.

"Oh fuck, Tris. Shiiiiiit."

I've never heard Tobias curse this much and it's making me that closer to cumming.

"Four, I'm- I'm gonna cum."

He speeds up his rhythm and moves back to sucking on my breasts and I feel it building inside of me. Pretty soon I cum. I don't know how loudly I moan. My orgasm consumes me. It runs up and down my body a million times, igniting every cell. I had no idea I was capable of feeling something like that. A moment later, Tobias' body becomes stilled and rigid and he cums calling out my name.

After we come down from our orgasms, Tobias still inside me, we both breathe heavily and stare at each other. As we catch our breaths, he leans down and we kiss, but this time, it's gentle and tender. He slides out of me and lies next to me. I put my head on his chest and sigh. Tracing lines on his hard stomach with my fingers.

"That was… amazing," I say, my head still spinning. "I always thought it would awkward and I would mess it up the first time but that just felt so good and right."

"Well... I know what we're going to be doing a lot from now on." Tobias says.

"We better. I don't know if I'll be able to stop now that we've started."

We laugh and kiss. We get up and put our underwear back on before collapsing from exhaustion.

"I love you." I say sleepily.

"I love you too." He replies and kisses my forehead.

And we fall asleep, hearts and legs intertwined.