A/N: Here's where the smut comes in.

Rebecca shoved a bright orange shopping bag into Riza's arms with a distinctly devilish expression. She must have skipped class to go to the Halloween store, Riza realized, and she opened the bag with a sense of foreboding, holding it as though she expected something to jump out at her. What she found was almost worse. She removed the costume with disgust. "'Lustful Lieutenant'?Rebecca, what the hell? Am I supposed to wear this?"

"You still owe me a favor," Rebecca said, flopping onto her bed with an expression of smug triumph. Riza resisted the urge to throw a pillow at her.

"I'm not sure how humiliating myself at a costume party counts as a favor," Riza said dryly.

"You won't humiliate yourself," Rebecca assured her. "Every year, you show up dressed like a zombie or a mummy or something. You never wear anything flattering and it's a damn shame. You've got a lot to show off."

"That's because it's always freezing this time of year," Riza said. Considering the fact that this party was going to be in their building, it probably wasn't the best excuse.

As though she had read Riza's mind, Rebecca's face lit up. "Perfect. I had thought it was because Roy would get jealous if you started attracting attention from other guys."

"He might, but that's not my concern." Riza turned the costume over to check the measurements. It was only one night and she could escape to her room whenever she wanted. And now that Rebecca had brought him up, she relished the idea of making Roy squirm. Perhaps she wouldn't be returning here alone.

"So are you going to do it or not?" Rebecca folded her arms across her chest.

"I'll do it." Setting the costume aside, Riza pulled a textbook from her desk. Her phone lit up but she ignored it until she had found the first page of the assigned reading and opened her notebook to a blank sheet. The notification showed that Roy had sent a snapchat. Curious, she opened it to see him already in costume, complete with hat and eye patch. "Arrr u coming tonight scurvy lass?" Riza laughed aloud at that; at least he'd had the sense not to call her wench.

She replied with a picture of her book: "Do your homework." A few sentences into the first paragraph, she received a picture of Roy frowning. He had drawn a tear in the corner of one eye. She turned her phone off.

By the time Rebecca insisted they would be late if they didn't start getting ready immediately, Riza had only three pages left. Deciding it was safer to leave them until later than to ignore her friend, she closed the book. The costume seemed even more scandalous now that it was time to put it on than it had when she first saw it. Once Rebecca's back was turned, she changed as quickly as she could; the skirt went on easily but the top was too small and nearly impossible to button even though it was cut low across her chest. She caught a glimpse of herself in the mirror and thought she looked distinctly un-Riza-like, between the scandalous outfit and how disheveled her hair was from taking her sweater off. Rebecca, when she turned around, seemed pleased by what she saw.

"You look hot, Riza," she said, coming over to smooth Riza's hair.

"So do you." If anything, Rebecca looked much better; she was perfectly at ease in her sailor costume, which was even more revealing than Riza's.

Rebecca handed Riza her liquid eyeliner and closed her eyes patiently. This had almost become a tradition for them; Riza's steady hands meant that she applied it perfectly every time. In return, Rebecca helped her pick out the best shade of lipstick for the occasion. Tonight, she had set out a brand new tube of a wine red shade Riza assumed she had bought at the same time as the costume.

Once Rebecca's transformation into a pinup girl was complete, Riza did her own makeup in front of the mirror, taking care to coat it on thicker than she would have without the possibility of Rebecca claiming she hadn't held up her end of the bargain.

"Ready?" Rebecca asked, making a few last minute adjustments to her costume.

Riza, unsure that she would ever truly be ready, nodded.

They walked down to the longue arm in arm; somehow, they had managed to arrive early. The only other people in the lounge were acquaintances from other floors, keeping to themselves in tight clusters. Riza sat on the couch and crossed her legs, tugging the skirt as far down her thighs as she could, which wasn't far at all. She kept her arms loosely at her sides; to do anything else would only make her breasts look even more comically large than they already did.

"Hey, Rebecca," Jean said as he and Heymans approached. "Looking good. Where's—wait, is that Riza?"

"Of course it's me," she said, feeling disgruntled.

"Roy's going to have a heart attack when he sees you," he said.

Before Riza could come up with a smart retort about how it was silly to think Roy would have a heart attack when he had seen considerably more of her on multiple occasions, she heard Roy himself say, "What's this about a heart attack?"

"Stand up, Riza," Rebecca said, taking her hands and pulling her to her feet. For the moment, Riza didn't feel quite so self-conscious anymore.

"What took you so long?" she asked.

"I was admiring the view. I don't get to see you dressed up like this very often." He looked slightly flustered but still almost as pleased as Rebecca and she couldn't help but smile.

She stepped into Roy's arms, relief settling over her as he hugged her close. "You looked like you were about to rip someone's throat out. What did Rebecca do to convince you to wear something like this?" he asked. His breath was hot against her ear.

"I owed her a favor," Riza explained.

Roy's lips curled into a smirk against her cheek. "That reminds me: I believe you still owe me one as well. Why don't we take this upstairs?"

Anything to get away. Besides, it had been weeks since they'd had a chance to do anything remotely sexual and she missed it at least as much as he did. She licked her lips. "Let's go."

They left the party with arms around each other's waists. Riza did her best to ignore the suggestive comments Rebecca called at their backs. The elevator offered them more privacy and Roy pulled away from her, looking a bit sheepish. "You don't owe me anything," he said as the door opened to their floor. "I just didn't like how uncomfortable you looked so I thought I'd give you a chance to escape."

Riza stared at him for so long he had to hold his hand in the door to keep her from being sent back downstairs alone. "You mean, you don't want to—you're not interested—"

"Oh, I want to alright. But only if you do too, not because of some dumb bet." With his free hand, he lifted his plastic eye patch, attempting to remove it without knocking his hat to the floor. Riza stepped forward to take it from his head and planted a kiss on his nose.

"I'll be glad to be finished with these favors," she said. "And I've been wanting to get you alone for some time now." She pulled her room key from the pocket of her jacket, noting how strange it was that such a flimsy costume had real pockets when the ones on her nicest pants were fake.

Inside the room, she led him to her bed. He sat on the edge to remove his boots and sat with his back against the headboard, propping her pillow behind him. Riza kicked off her own shoes, moving to lie between his legs. She kissed up his thighs, fingers working to unbutton his pants. His hands pushed her hair away from her mouth, continuing to stroke it as she knelt to kiss his lips and trailing down her back as their tongues met. With practiced fingers, she reached into his boxers to stroke his cock; it had already begun to harden with the intensity of their kiss and it took little coaxing for her to free it. Meanwhile, Roy's hands had found their way to the hem of her skirt. She pushed them away, still kissing him.

Riza moved her lips to the corner of his mouth, then down his jawline. With each kiss, she undid another button on his shirt until it was completely open, leaving his chest exposed to her wandering mouth. His skin seemed all the more sensitive for the months that had passed since they'd last had this kind of privacy; even the slightest pressure of her teeth over his collarbone elicited a moan from low in his throat. She brushed her lips down to latch onto his nipple the way he was so fond of doing with hers.

"Riza," he said breathily as his hands clasped around her back; his breath hitched in his throat, cutting the next iteration of her name short as her tongue traced from his nipple down to his stomach, down, down, down until—

Roy cried out again when she took him in her mouth, lips placed firmly just below his head while she licked it, savoring the throaty sounds he made, the way his fingers stiffened against her shoulder blades. Riza caressed the insides of his thighs with her thumbs, gently working up until her fingers curled to rest on his hips. Even through his pants, he was sensitive and he bucked up, carrying her with him, mouth still holding his cock. She moved up and down on it, so slowly he seemed unable to bear it any longer.

"Please," he begged, "Pleasepleasepleaseplease."

With one hand still against his hip, she moved the other to grip his shaft. Faster and faster she stroked him, though her tongue still moved slowly across his head until she felt him spasm, one last loud moan escaping his lips as he came. She pulled back with closed lips and he reached over the side of the bed for the trash can, held it up for her to spit into.

"Thanks," she said sheepishly. "I still can't—"

He pulled her down to kiss the taste out of her mouth, sweet and gentle with his tongue just barely touching hers. "It's fine," he said when she sat up again. "Now trade me places."

It was easier said than done on the narrow dorm bed, but they managed it with minimal contact between elbows and heads and the wall. When Riza had settled comfortably onto her pillow, Roy pressed his lips just above her knee, working his way up the inside of one thigh with feathery kisses and openmouthed down the other, his hands reaching up her skirt to remove her panties. She lifted her hips obligingly, locking eyes with him as he sat up sliding the black silk down her legs. Once he had tossed them in the general direction of her hamper, he scooted forward to kiss her, one hand between her thighs, mere inches away from where they met. Teasing her. His other hand twined with one of hers and he stroked the back of it with his thumb, gentle in contrast to his demanding lips.

Her free hand tangled in his hair, pulling him back from her lips. He opened his eyes, a question forming in them until he saw the longing in her own. A cocky grin formed on his lips as he licked them eagerly. Settling between her legs once more, he moved his hand out of the way. His forehead pushed the front of her tight skirt up as he planted first a chaste kiss, then a naughtier one on her opening, his tongue tracing its outline on the second. She clutched his hand and his hair tighter, pulled him closer to her as he hooked her left leg over his shoulder. She did the same with her right, locking her ankles below his neck.

With his nose, he spread her folds open, tongue flat and following close behind. Unlike Roy, she found it difficult to fully let herself go and the moans that built in her throat came out as soft whimpers and sighs instead. He responded with a sharp swipe of his tongue over her clit and a smirk she could feel against her skin. As sweet as she found his determination to make sure she felt good, she couldn't shake the nagging feeling that it was more of a point of pride than a selfless act. He may have been clumsy and awkward at first but with her guidance and years of practice, he knew exactly what to do, whether to get her off quickly or to tease her until she melted into the bed. Tonight, he seemed to be angling for the latter.

He pulled back abruptly, leaving a pool of tension that spread all the way from her navel to her clit, which practically ached with the need for release. He went back to kissing the insides of her thighs and she wanted to scream her frustration, though she held it in out of habit. She tangled her fingers tighter in his hair and tugged him up towards the fork of her legs again. He resisted, nibbling at the skin on the thickest part of her thighs and using his hand instead, pushing first one, then another finger inside her, curling them up as he stroked her with their tips. His thumb parted her labia, moving in circles just below her clit and she bit her trembling lip.

His lips closed around a small patch of skin and suckled hard. At least he'd had the decency to leave the mark on her thigh this time. She didn't want to spend the next week wearing turtlenecks to bed and scarves everywhere else. "Enjoying yourself, Lieutenant?" he asked, pressing his fingers up hard.

"What are you talking about?" she said.

"Your costume. And strictly speaking, I outrank you."

"The captain of a pirate ship has no right to command a law-abiding—oh," she sighed as he returned his attention at last to her clit, sucking on it far more gently than he had on her thigh. He prodded his tongue against it in a quick staccato until her hips rose from the mattress and her nails dug into his scalp and his hand. Then he went back to licking slow and sweet in time with his fingers. For the moment, she was grateful he had decided to fuck her in costume; the skirt provided another barrier to keep her wetness from soaking through to the mattress. One last thrust of his fingers, one last lazy flick of his tongue sent her into a powerful orgasm that had her releasing her moans at last, her throat relaxing as the sound escaped her. He pressed one last kiss to her clit as her climax faded, and licked the fingers he had used to pleasure her.

One glance was enough to tell her he wasn't finished yet and she gave a contended hum when he scrambled off the bed to find her stash of condoms. He undid his pants again, shoulders relaxing as he freed his erection. Riza watched sleepily as he tore open the packet and rolled the condom down his length. She wished it were possible for them to fall asleep together after; she missed spooning with him.

Forcing herself up, she cleared room for Roy to lie down again, and she sat on his cock eagerly once she had slathered lube over it. One hand moved between them as she leaned forward, her mouth missing his and catching the corner of his lips instead when she went in to kiss him. He adjusted his head to take her bottom lip between his, tugging at it as he traced it with his tongue.

Roy withdrew his hand to wrap his arms around her. Slowly, carefully, he twisted them until Riza lay on the bed. He pressed his lips to her neck, careful not to leave a mark. His fingers found her clit again, and the firm pressure combined with the sensation of his mouth against her throat left her almost breathless. She wrapped her legs around his back to pull him closer, hips rising to meet his with every thrust.

When he came, he moved to lie beside her, back pressed against the wall. He feathered lazy kisses across her cheek and neck as his hand remained between her legs, thumb circling her clit. Riza felt her eyelids droop as a slow orgasm pulsed through her body, leaving her sleepy and oh so comfortable. She rolled so her back was against Roy's chest. After smoothing her skirt to preserve her modesty, Roy hugged Riza close. He whispered something that might have been an "I love you" but she was already half-asleep.

And then she felt something poke her spine. "What?" she mumbled, too tired to properly express her irritation.

"I said, don't go to sleep." Roy hooked his leg over hers and pulled her closer. "Riza?"

"Let me sleep."

"Rebecca will kill me." Roy's fingers played with the cheap plastic buttons on the front of her costume jacket. He popped the top one open, then the next and the next and the next until her entire body was exposed. He made no attempt to touch her breasts, however, so she supposed he was simply trying to make her more comfortable. It was easier to breathe with the jacket open, for one thing. "If you want to sleep," Roy said, "you should at least change out of this costume. I'll even find pajamas for you."

As much as she wanted him to stay, she knew he would have to leave before Rebecca came back anyway. She scooted forward to give him room to sit up, watched as he climbed over her and out of bed, depositing the used condom in the trash before he went to her closet. He found a pair of fuzzy pants and one of his old t-shirts and held them up for her approval. When Riza nodded, he brought them to her.

Riza sat up to swap the jacket for the shirt. "I'm not wearing underwear," she said.

"Would you like to be?" Roy went back to her closet when she nodded and opened the drawer of neatly folded panties. He tossed a pair at her and she tugged the skirt off, impressed at Roy's ability to hold her gaze while she was changing.

He came back to give her a hug and a quick peck on the lips. "Goodnight," he said, squeezing her to him. "See you tomorrow."

"'Night," Riza said. She settled onto her pillow again and pulled the covers up.

"I wish I could stay," he said, leaning down to kiss her forehead.

"I wish you could too," she admitted with a yawn. "But it won't be like this forever."

"Two years sounds like forever," he said. His hand smoothed her hair back and his eyes looked sad. "It's going to be awfully hard living with a stranger next semester. I'd rather live with you. Hell, I'd rather live with you now. I am sick to death of hearing about Gracia and the wedding. If I talked about you half as much as he talked about her, I think you'd kill me."

Riza closed her eyes. "Goodnight, Roy," she said, hoping he would take the hint. He kissed her one last time and she heard him cross the room, the door opening and closing as he let himself out. Riza was asleep before she even had time to wonder if he had locked it.