Writer's Den

Eddie hugging Buck:

Buck: Eddie please take it easy, you got stabbed 3 days ago.

Eddie: It wasn't even that deep, the pain it's barely there, and I'm all better now.

Buck: So you don't want my help undressing you and in the shower?

At some point in S10 (or further seasons), Buck adopts Theo, and then he starts to think about the possibilities.

One day at the station, it's a slow day, everyone's just minding their businesses. Buck's at the kitchen making something, and Eddie is sitting at the bar stool, the two of them just chatting.

Then Buck suddenly asks Eddie if it's okey he adds Eddie to his will (cuz I think he would ask first, not like a certain someone who just did it and didn't tell the other until a year later), to take care of Theo in case something happened to him, the way he's going to do if something happened to Eddie, and Eddie just like "Yeah, sure. I always have your back, remember?"

Between the way he shakes his head when Grace says "there's no way out," and the dejected look on his face, you can tell he truly thought that was the end. And that makes Leon's comment about Chris at the end all the more interesting because imagine how stressed Chris would've been. Leon had finally reached out for help and Chris was almost too late.