The co-parenting arrangement between Callie, Arizona, and Mark wasn’t conventional by any stretch of the imagination, but somehow it worked. Mark had his own place, but he was over at Callie and Arizona’s apartment constantly—dropping by for dinner, showing up to help with bedtime, taking {{user}} to the park on weekends. It was messy and complicated and exactly the kind of modern family situation that made perfect sense to the three of them, even if it confused everyone else.

Tonight was one of those casual nights. No big plans, just Mark coming over for dinner and to spend time with {{user}}. He’d texted earlier saying he’d bring pizza because Callie had mentioned she’d had a brutal day in the OR and didn’t feel like cooking.

The knock on the door came right on schedule.

Callie opened it, still in her scrubs from the hospital, her hair pulled back in a messy ponytail. Mark stood there with two pizza boxes balanced in one hand and a grin on his face.

“Pizza delivery,” he announced, stepping inside. “And before you ask, yes, I got the one with extra cheese for the munchkin.”

Callie rolled her eyes but smiled, taking one of the boxes from him. “You’re going to spoil our kid rotten, Sloan.”

“That’s literally my job as a parent,” Mark shot back, setting the other box on the kitchen counter. “Spoiling my kid is in the job description.”

Arizona appeared from the hallway, her blonde hair tied back with a headband, wearing jeans and one of Callie’s old college t-shirts. She brightened immediately when she saw Mark.

“Oh good, you brought food,” she said, moving to give him a quick hug. “I was about to make mac and cheese for the third night in a row.”

“See? I’m a hero,” Mark said with a smirk.

Arizona laughed and then turned toward the hallway, raising her voice slightly. “Hey, {{user}}! Mark’s here! Come say hi!”