The chapter where Owen sets some rules for Cristina.

"I've had a lot of time to think these days." Owen said as Cristina entered his room. He'd started his chemo treatment and needed to stay in the hospital for several days. Eventually he could get his chemo as an outpatient, but the first few doses had to be more powerful and resulted in a long, boring, and painful hospital stay. Owen was still getting used to being the patient, Cristina was getting used to having her boyfriend as the patient, staying down the hall instead of being that amazing surgeon he is.
"Oh yeah?" Cristina sat on the edge of his bed, watching the TV mounted on the wall.
"I think it would be best if we had some rules while we're going through all this. So that neither of us get annoyed or tired of each other, so we can both be strong and clear headed and not bogged down with all this being sick business." Owen had taken her hand while she continued to gaze at the screen. Cristina looked back at him. "What kind of rules?"
"Well for starters, I think it would be best that you try to get in on a surgery everyday. You have a much better day when you start cutting, at least that's what Derek says."
"Okay, I can see what I can do. It would be in the morning most likely."
"That' fine. Just make sure you do it." He looked at her. "I don't want my goddess getting rusty because of me."
"Never." She kissed him.
"I also think it would be important for both of us if you sleep in our bed more nights than you do here at the hospital. I know you want to be with me, and I want you to be with me, but I'll be difficult as this treatment wears on and you'll need your sleep. So as difficult as it is for you to sleep alone now, I think it's important that you get a good night's sleep."
"Derek will have to deal with me borrowing Meredith then." She said with a wink. "I think you should only focus on today and tomorrow. Thinking too far in the future can get a person down, when the road looks all bumpy and crooked and you can't see the end. So it's important to think about today and just the next day. It's both attainable and fuel to get past what you're going through now."
"That sounds like something Meredith would say."
"She, with her mom, it was difficult because she knew the end. So instead she spent time with her and only focused on what she could really see. She said it made it easier to enjoy the now instead of worry about the end."
"We will get through this."
"I know." She paused and laid down next to Owen. "Enough rules. Let me enjoy this time. I'm bound to get paged sooner than we'd like."
"Yes mam." He smirked and rested his head on hers and they enjoyed whatever mindless show happened to be half interesting at the time.

Cristina had to leave eventually, and Owen needed his rest. He was as he would be for the duration, in his bed, watching TV and trying to keep busy when Meredith walked by slowly. She stayed in the hall, peaking in.
"She's not here." Owen called towards the hall.
"Oh. Sorry to bother you."
"It's okay. You can come in you know." He put his book down and looked in her direction. She walked in.
"I know. It's just..." She was now closer to his bed. "You're her guy. And it was rough seeing you shot and having to take care of her while she took care of Derek. But now you're, I can't help you like I could."
"Just take care of her. She's my person too." He gave her a half smirk. "I don't want to weigh her down. So please, take care of her. Make sure she's still cutting, and sleeping and all that stuff I can't see her do because I'm stuck in here."
"We will. Derek and I already talked about it. And we will make sure you two are taken care of. You can't always see what's lacking when you're consumed by it all. So we'll help. Derek is planning on spending some guy time with you, just like before. He's quite the Gin player he says." Meredith smiled, Owen smiled back.
Owen broke the brief silence. "It's nice to know we have people."
"Yes it is."
"She's probably in the pit or something, keeping busy. She charts in here, but everything else is busy work out there."
"Thanks." Meredith turned to leave. "I'll be seeing you."
"Thanks. Tell Derek I'm not bad at Gin myself."

"Will do."

Meredith and Owen had butt heads a bit earlier, with Meredith being her person and Owen trying to fill a similar role. But it was Mere who was around to help her through things Owen couldn't. He remembered a conversation they had had about Cristina early on.

"I'm not a bad guy, am I?" Owen was looking at Meredith down on his left, at a nurse's station. He was charting, she was checking on a patient.
"No, you're not." She said, closing the chart and handing it back to the nurse on the other side. "Just don't hurt her again."
"I am forever sorry. Eternally, never-can-really-fix-my-mistake sorry about that." His eyes pleaded with hers, watery blue in a if I could plead with dignity I would, sort of way.
"No, not that." She paused. "Don't hurt her like Burke did. He took her mojo. And then Hahn wouldn't let her be a surgeon. She was in pieces and you, well you sort of put her back together in ways that I couldn't. So don't break her. Because I won't be able to fix it after."

It was after this that he knew Meredith was okay with him, she knew Cristina needed him, and he knew Cristina needed Meredith. They learned how to co-exist and were doing pretty well with it. He dared think, they were almost friends, and he was glad to have his family grow to accompany Cristina's.