Jo Wilson sat on a bench outside Grey Sloan Memorial, her eyes fixed on the bustling street in front of her. It was one of those rare quiet moments between surgeries, and instead of resting, her mind was racing. She could hear the faint hum of hospital life behind her, but her thoughts were far from work. They were on Alex Karev—and more specifically, the mess her heart had gotten itself into.

She'd always known Alex in a way others didn't. Beneath his gruff exterior, behind the sarcastic remarks and tough-guy persona, was a man with one of the kindest hearts she'd ever encountered. He had been there for her through her worst moments, and now... well, now things felt complicated.

Lately, Alex had been spending a lot of time with Meredith and Izzie, and while Jo tried to brush it off, it gnawed at her. Especially with Izzie back in the picture. Jo had always known about Alex's complicated past with Izzie, but seeing them reconnect brought back old insecurities. She loved Alex, but what if his heart still belonged to someone else? What if Izzie was the one he truly wanted?

"I'm the one who makes you laugh when you know you're about to cry…" The lyrics from Taylor Swift's "You Belong With Me" played in Jo's head as she let out a sigh. She had always been the one to be there for Alex, and he had been there for her. But sometimes, she couldn't help but feel like she was on the outside, watching him gravitate back toward a history he hadn't fully let go of.

"Why does everything have to be so complicated?" Jo muttered under her breath, running her hands through her hair.

The sound of footsteps approaching snapped her out of her thoughts. She looked up to see Alex walking toward her, his scrubs slightly wrinkled and his usual tired-but-confident expression on his face.

"Hey," Alex greeted her, his voice warm but casual, as if he hadn't been occupying every corner of her thoughts.

"Hey," Jo replied, trying to keep her tone light despite the tension she felt inside.

Alex sat down next to her, letting out a long sigh. "Crazy day, huh?"

Jo nodded, glancing at him out of the corner of her eye. "Yeah. The usual chaos."

There was a brief silence between them, the kind that always felt heavier than it should. Jo wanted to ask him about Izzie, wanted to know what was going on in his head, but she didn't want to come across as jealous or insecure. So instead, she said nothing.

Alex turned to look at her, his brow furrowing slightly. "You've been quiet lately. Everything okay?"

Jo forced a smile, though it didn't quite reach her eyes. "Yeah, just... tired."

Alex studied her for a moment, clearly not buying her answer. "Come on, Jo. What's going on?"

Jo bit her lip, debating whether or not to bring it up. But the truth was, it was eating away at her, and she couldn't keep pretending that it wasn't.

"It's just..." Jo began, her voice trailing off as she tried to find the right words. "I know I shouldn't feel like this, but seeing you with Izzie lately... it's been messing with my head."

Alex blinked, clearly surprised. "Izzie? Jo, you don't have to worry about her."

Jo let out a small, bitter laugh. "I know, I know. It's stupid. But I can't help it. You have so much history with her, and sometimes I feel like I'm competing with a ghost."

Alex's expression softened, and he reached out, taking her hand in his. "Jo, you don't have to compete with anyone. I'm with you. I love you."

Jo's heart swelled at his words, but there was still a part of her that couldn't shake the doubts. "But Izzie—"

Alex cut her off gently, squeezing her hand. "Izzie is my past. You're my future. Don't ever doubt that."

Jo looked at him, her eyes filling with emotion. She wanted to believe him—she did—but the insecurity that had been gnawing at her for weeks wasn't something that would just disappear overnight.

"I'm trying," Jo admitted quietly. "But it's hard sometimes. I see how close you guys were, how much you meant to each other, and I can't help but wonder if part of you still... you know, has feelings for her."

Alex let out a soft sigh, his eyes filled with understanding. "Jo, what I had with Izzie was a long time ago. We went through a lot together, but that part of my life is over. You're the one I want to be with. You're the one I chose."

Jo felt her chest tighten with emotion, her insecurities melting away just a little. She nodded, finally allowing herself to believe his words.

"I just... I don't want to lose you," she whispered.

Alex leaned in, pressing a gentle kiss to her forehead. "You're not going to lose me. I'm right here."

Over the next few days, Jo did her best to push her insecurities aside, but they still lingered in the back of her mind, especially when she saw Alex and Izzie working together. It wasn't that she didn't trust Alex—she did. But there was something about the way Izzie looked at him, like she still held a piece of his heart.

One afternoon, Jo found herself standing in the break room, mindlessly stirring her coffee as her thoughts swirled. She didn't even notice when Meredith Grey walked in, until she heard her voice.

"Jo?"

Jo jumped slightly, turning to see Meredith standing by the door, her arms crossed and an amused smile on her face.

"Sorry, didn't mean to startle you," Meredith said, walking over to pour herself a cup of coffee. "You okay? You've been... distracted lately."

Jo sighed, setting her coffee down on the counter. "Is it that obvious?"

Meredith raised an eyebrow. "A little. What's going on?"

Jo hesitated, but then the words came spilling out. "It's Alex. And Izzie. I know it's stupid, but I can't help feeling like there's something still there between them."

Meredith took a sip of her coffee, watching Jo carefully. "You know Alex loves you, right?"

"I know," Jo replied quickly. "And I love him. But seeing him with Izzie just... messes with my head. They have so much history."

Meredith set her coffee down and leaned against the counter. "History is just that—history. You're the one Alex is with now. You're the one he chose."

Jo sighed, running a hand through her hair. "I know. It's just hard sometimes."

Meredith gave her a sympathetic look. "Relationships are hard, Jo. But trust me, Alex is all in with you. I've known him a long time, and I've never seen him this happy."

Jo smiled, though the insecurity still lingered. "Thanks, Meredith."

Meredith shrugged, picking up her coffee again. "Anytime. And remember—you're enough. Don't let Izzie or anyone else make you feel like you aren't."

That evening, Jo sat on the couch in their apartment, waiting for Alex to come home. She had spent most of the day thinking about what Meredith had said, and she knew she needed to have a real conversation with Alex. She couldn't keep letting her insecurities eat away at her.

When Alex finally walked through the door, looking tired but happy to see her, Jo stood up, taking a deep breath.

"Hey," Alex said, walking over to give her a quick kiss. "Everything okay?"

Jo nodded, but her heart was pounding in her chest. "Yeah. But we need to talk."

Alex raised an eyebrow, clearly sensing the seriousness in her tone. "What's up?"

Jo took a deep breath, her hands trembling slightly. "I've been thinking a lot about us. And about Izzie."

Alex's expression softened, and he nodded, sitting down on the couch. "Okay. Let's talk."

Jo sat down next to him, her heart racing. "I love you, Alex. I do. But I need to know that we're on the same page. That you're really all in with me."

Alex frowned, reaching for her hand. "Jo, of course I'm all in. What's making you doubt that?"

Jo bit her lip, her insecurities bubbling to the surface. "It's just... I see you with Izzie, and I can't help but wonder if part of you still... wants her. If part of you still thinks about her."

Alex's eyes widened in surprise, and he shook his head. "Jo, no. I'm with you. Izzie is in my past. What we had was... complicated, but it's over. You're the one I want. You're the one I chose."

Jo felt tears welling up in her eyes, her chest tightening. "I know, but it's hard not to feel like I'm competing with her. Like I'm not enough."

Alex's expression softened, and he pulled her into his arms, holding her close. "You are enough, Jo. You've always been enough."

Jo buried her face in his chest, the weight of her insecurities slowly lifting. She had spent so much time worrying about losing Alex, about not being good enough, but in this moment, she realized that she didn't have to fight for his love. He had already chosen her.

"I'm sorry," Jo whispered. "I've been so scared of losing you."

Alex pressed a kiss to her forehead, his voice gentle. "You're not going to lose me. You belong with me, Jo. And I'm not going anywhere."

Jo smiled through her tears, finally allowing herself to believe his words. She wasn't competing with anyone. She was enough, and Alex loved her for exactly who she was.

And in that moment, Jo knew that no matter what challenges they faced, they would face them together—fearless and unshakable.