X-Men Oneshots

Undercover (Erik Lehnsherr)

The small, coastal town was quiet and picturesque, the kind of place where everyone knew each other. Erik and Y/N had been sent on a mission, tasked with posing as a married couple to gather intel on a dangerous group hiding in plain sight. The ruse was simple enough—play the part of a newlywed couple on vacation, blending into the quaint, seaside community. But what wasn't simple was the undeniable tension simmering between them.

From the moment they were assigned this mission, Y/N had known it would be difficult. Not because of the cover story, but because of Erik Lehnsherr. Cold, calculating, and brilliant, Erik had always kept himself at arm's length from everyone, including her. But that distance hadn't stopped Y/N from feeling something whenever they were together. His sharp wit, his confidence, and the flashes of vulnerability he let slip—just enough to keep her guessing—drew her in more than she cared to admit.

Pretending to be in love with him, to play the role of his doting wife, was proving to be far more dangerous than the mission itself.

They arrived at the small cottage they were renting for the duration of their stay, the air thick with unspoken tension. Y/N couldn't help but glance over at Erik as he unlocked the door, his jaw set in that familiar, determined way. He was good at keeping his emotions in check, but she knew that he felt it too—the attraction, the pull that had only grown stronger since they began this mission.

"Home sweet home," Erik said, his voice low as he pushed the door open, gesturing for her to step inside.

Y/N walked in, her heart beating a little faster than she wanted to admit. The cottage was cozy, with soft, muted colors and a warm, inviting atmosphere. It looked like the perfect place for a romantic getaway, which only made their situation more complicated.

"So," Y/N said, trying to sound casual as she dropped her bag by the door. "We're supposed to be newlyweds, huh?"

Erik smirked, his gaze flickering to hers. "That's right. Mr. and Mrs. Anderson, happily married and here to enjoy a quiet vacation."

She couldn't help the smile that tugged at her lips. "Happily married," she echoed, a teasing lilt in her voice. "We're going to have to sell that pretty well, you know."

His smirk faded slightly, his expression turning more serious. "I know," he said quietly, stepping closer to her. "But we've faced worse, haven't we?"

Y/N swallowed hard, the proximity between them making her pulse race. "Yeah, we have," she murmured, her voice softer than she intended.

The past few days had been a blur of carefully rehearsed stories, dinners in town, and pretending to be completely in love. Yet, the longer they spent together, the more the lines between their cover story and reality began to blur. Every touch, every glance, felt like more than just an act. When Erik's hand rested on the small of her back, or when he leaned in to whisper in her ear, it sent shivers down her spine—shivers that had nothing to do with the mission.

Now, in the intimacy of the cottage, with no one watching, Y/N could feel the weight of all the unsaid things between them.

"We're alone now," Erik said, his voice a bit lower, more gravelly. "We don't have to keep pretending."

She met his gaze, feeling the intensity in his eyes, like he was daring her to admit what they'd both been avoiding. "Aren't we?" she asked softly, her heart hammering in her chest.

Erik's jaw clenched slightly, his eyes never leaving hers. "Are you?" he asked, his tone serious, almost challenging.

Her breath caught in her throat. The air between them was thick, heavy with anticipation, and she felt herself being pulled into him. The tension that had been building for days, maybe even weeks, was now almost unbearable. She could feel it—he wanted her just as much as she wanted him, but neither of them had been willing to cross that line. Until now.

"I don't know anymore," she whispered, her voice barely audible.

Erik took a step closer, closing the remaining distance between them. His fingers brushed lightly against her arm, and Y/N's breath hitched at the contact. His touch was gentle, but there was an underlying intensity to it, as if he was holding himself back.

"Y/N," he murmured, his voice low and full of emotion. "Tell me to stop. If you don't want this, tell me now."

Her mind raced, her thoughts a whirlwind of confusion and desire. But deep down, she knew there was no stopping this, no stopping what had been building between them for far too long.

"I don't want you to stop," she whispered, the words slipping out before she could think to hold them back.

That was all it took.

In an instant, Erik's hand cupped her face, his lips crashing down on hers in a kiss that was anything but gentle. It was fierce, passionate, full of all the unspoken emotions they had both been keeping locked away. Y/N melted into him, her arms wrapping around his neck as she kissed him back with equal fervor. The world around them seemed to fade away, leaving only the heat between them, the fire that had finally been ignited.

Erik's hands slid down to her waist, pulling her closer until there was no space left between them. Y/N could feel the strength in his grip, the way he held her as if he never wanted to let go. She gasped against his lips as his hand moved to the small of her back, his fingers pressing into her skin, sending a wave of heat through her body.

Their kisses grew deeper, more desperate, as if they were trying to make up for all the time they had spent denying what was between them. Every touch, every caress, was charged with intensity, and Y/N could feel herself getting lost in him, in the moment.

When they finally broke apart, both breathless, Erik rested his forehead against hers, his chest rising and falling with the same ragged breaths she was taking. His hand remained on her waist, his thumb brushing against her skin in a soothing, almost possessive way.

"This isn't just an act for me," he said quietly, his voice raw with emotion. "It hasn't been for a long time."

Y/N closed her eyes, her heart swelling at his words. She had known, deep down, that there was something real between them, but hearing him admit it made everything feel more tangible, more undeniable.

"It's not an act for me either," she whispered, her fingers threading through his hair as she pulled him closer again. "It never was."

Erik's lips found hers again, slower this time, more tender. The passion was still there, but now it was mixed with something deeper, something real. And as they stood there, wrapped in each other's arms, Y/N knew that the lines between the mission and reality had long since blurred.

What they had now—this undeniable connection—was no longer part of the undercover story.

It was real.