Set post-series. Bonya takes a huge step in their relationship.

"Seymour, can you come look at this for a second?" Sonya called for her boyfriend, trying to contain her excitement. Or her nervousness, she honestly couldn't tell what she was feeling. Regardless of that uncertainty, butterflies erupted in her stomach. She had put so much effort into her plan, the payoff was going to be better than she could've possibly imagined. If it paid off at all. Shaking that terrible thought away, she fought to control her emotions. Everything was going to play out wonderfully. Birkhoff was going to help with a 'hack', and read the message she had hidden within it. Despite her anxiousness, she knew he was going to be absolutely delighted and thrilled. There was no doubt he would say 'yes'.

They had talked about that future for them. The couple had been together for years. It was about time they took one more step forward. They loved one another more than they ever thought was possible. What was next for them made sense. They would be solidifying that love, working on it and growing it everyday. Sonya bit back her brilliant smile when Birkhoff came into the room. He sat at the computer, staring at what she had left for him. She didn't tell him what she was 'hacking'; she hadn't thought that excuse out enough. But that didn't seem to bother him. He loved a challenge. Even if what he was staring at was a complicated puzzle, "God, this coding is a mess. Who wrote this piece of shit? A dumbass?"

Brown eyes rolling, Sonya did everything she could to not laugh. She had intentionally made her coding incomprehensible. It was a challenge for her to dumb down her skills, but it was all worth hiding her question for her boyfriend. She honestly couldn't think of a better way to ask. It was fitting for them, and an example of what they had worked towards together. They had their happily ever after; they had freedom and family. A love filled future was the only thing awaiting them. She was brought out of her musings by Birkhoff's confusion. He found it, "Hold on. Did someone leave a message in this code?"

Well, he at least found some of it. He dug through the coding for the rest of the words, piecing it all together. While he was distracted, Sonya stepped away from the desk. She didn't have any jewelry for him. They could get rings later. But she could get down on one knee, sort of make it traditional. Though, when had anything they'd ever done been normal. Even after saving the world, they still didn't have that normal life. Who cared, anyway. What they had was special. Sonya couldn't stop her brilliant smile then. She beamed up at Birkhoff as he finally read her message, "Will you marry me?"

"I want to live long and prosper with you," It might have been cheesy and dorky, but she wasn't embarrassed. The words felt right to follow her message with. Down on one knee, Sonya excitedly grinned at Birkhoff. Happy tears filled her eyes for a moment, overwhelmed by emotion. The question was out there, and she was so glad it was; she was going to get everything she wanted. Except, her boyfriend glanced at her in shock. A smile pulled at his lips, but it was overtaken by a sudden realization. He dashed out of the room, towards the bedroom. She blinked, "What?"

She didn't think he actually ran away in fear. Sonya didn't have to worry about Birkhoff's commitment to her. Their talks proved they wanted to be in a relationship together forever. Something else was going on. Beyond bewildered, she followed him. He was rummaging through his nightstand, throwing things around as he dug through the clutter. All she could do was cross her arms, and stare at her boyfriend. He was bringing his usual weird and ridiculous self to another level. His explanation didn't help things, "I was going to wait for our dinner tomorrow. You know, surrounded by our family."

"Wait for what?" Sonya wondered. The next day they were flying to Michael's and Nikita's for their monthly family dinner. The team continued to talk on the phone, and help Alex dismantle human trafficking organizations. But their dinners really allowed them to connect as the friends and family they were. If Birkhoff wanted to surprise her with something while all their loved ones were near, then it must've been monumental. Starting to have an idea at what it might've been, she moved closer to him. Her smile returned, just as brilliantly.

"It's dangerous to go alone. Take this. Please," Eventually finding what he was looking for, Birkhoff turned to his girlfriend. The grin on his face managed to outshine the engagement ring in the box. It was an elegant yet simple diamond that stopped Sonya's heat upon seeing it. Excitement bubbled out of her. Tears sparkled her eyes, and she began to laugh. He laughed along with her, not quite believing they had both proposed to each other. And that they had both done so by quoting Star Trek and The Legend of Zelda. The fact that they were on the same train of thought, however, only illuminated how right they were for one another.

"Well. I think you already know my answer," Through the brightest grin to ever grace her lips, Sonya replied. Birkhoff's smile matched hers, and he delicately slid the ring onto her finger. Both of them were trembling, not quite sure what to do with their ecstatic energies. They settled for a kiss, the ring box crashing to the floor as they held each other close. Their bodies were humming with so much emotion. The couple was elated, thrilled, completely and wonderfully happy. After what they had been through, and after what they had won, there was no doubt they'd reach that point in the relationship. Yet since they were there, joyfully engaged, they were so unbelievably excited for what came next.

Their kiss grew passionate and powerful as realization settled in. Sonya and Birkhoff were going to get married. Exhilarated hands grasped tighter onto one another, trying to bring themselves as close as possible. Her fingers twisted in his long, light hair, while he held securely to her waist. Smiles and laughter filled their kisses, washing them over in pure affection. The newly engaged couple couldn't get enough of each other. They didn't know how else to express their bright happiness and love. They had forever to look towards together. What words could fully emphasize that joy.

Eventually, the two stumbled and fell onto the bed. They weren't that concerned about situating themselves more comfortably on the mattress. The kiss had become heated and needy, slipping from mouths to nip at necks and jaws. Their hands had become greedy as well; they tugged at clothing and caressed warm skin. Birkhoff managed to unhook her bra without removing her blouse. His fingers tripped along her spine and the underside of her breasts. A breathy moan escaped Sonya as a result. She pressed her hips into his, kissing him fiercely. His own moan fell past his lips, and he returned the strong affection.

Clothing had become annoying and irritating. But the couple didn't want to separate from their searing kiss. Buttons and zippers were undone and garments were disheveled, yet there was still too much of a barrier between the two. Sonya was the first to break, tugging and pulling to remove her new fiancé's pants. She continued to kiss him thoroughly, her hand slipping into his open fly. When she grabbed hold of him and squeezed and rolled, Birkhoff gasped. She giggled in response, smirking proudly. Since they had finally pulled apart from their kiss, he could finally take off her blouse and pay special attention to her breasts. It was her turn to gasp.

Tearing away clothing became their utmost priority. Hands grabbed and caressed as they made their way across increasingly naked bodies. Mouths also took the opportunity to travel, kissing love into soft, heated skin. It wasn't necessarily a race to see who could get the other undressed first. But there was a sense of urgency to their actions. The engaged couple wanted to feel every inch of one another. There was so much to express, and the best way to do so was with kisses, touches, and actions. Sonya yanked at the rest of Birkhoff's clothing first (mostly because he was wearing less), and proudly celebrated that feat. She rolled atop him, grinding her hips into his. He surged upwards to kiss her passionately.

It was incredibly unfair that she still had on her underwear. She was shallowly thrusting in his lap, kissing him senseless, and running her fingers down his back. Birkhoff couldn't take much more of it. In not so fluid movements, he flipped Sonya onto the mattress. She laughed at his enthusiasm, and he was able to pull her underwear down her legs without struggle. His hands began to caress her thighs, dipping dangerously close to where she wanted him most. But she didn't have the patience for a slow build up. As much fun as tormenting one another with talented fingers would've been, she just wanted him. She reached to pull him to her, and kissed him tenderly.

"I love you," Birkhoff whispered against his new fiancée's lips. Sonya echoed the holy words, kissing him even more gently than before. They were fortunate that his searching for the ring had disturbed his nightstand; it made grabbing a condom easier. The need to rush seemed to disappear in that moment. Kisses and touches had been fiery and needy, an expression of excitement and joy. But then, the fact that they really were going to be together forever calmed the world around them. Her engagement ring felt cool as she placed a tender hand to his cheek. He smiled brightly, kissing her palm reverently. Once again, she pulled him to her for a slow, deep kiss. He brought himself home inside her.

They had to force their hips to maintain a steady rhythm. The two could take their time in kissing, caressing, and loving one another. Moans and declarations of adoration filled the warm air around the couple. It encouraged Birkhoff to snap his thrusts a little harder. Wrapping her legs around him, Sonya matched the tempo and intensity. She brought her hand to where they were connected, strumming them both higher towards bliss. The steady rhythm grew nearly untamed. Yet they were riding the waves as one. Holding tight to keep each other secure, their hands fit together perfectly. Her engagement ring was pressed between them, searing their skin and driving them insane.

When Sonya eventually reached her peak, she mumbled a curse and her fiancé's name. Birkhoff was close behind her, never far from her alluring pull. They moaned and gasped, and kissed ever so fiercely. There was something more powerful about the bliss they reached at that moment, than any other times they had had sex before. It appeared more full of love, more full of devotion. Their proposals meant they were determined to spend eternity with one another. The way they had moved and came together as one put further emphasis to their promises. There was no chance of separating the two. 'Til death do them part.