[Ack, he didn't expect to actually have to think about why he doesn't say it. Donatello helplessly gestures until he shrugs.] I, uh, I'm not sure? We've just never been a very... hug-y, verbal family. I guess we just kind of assume everyone knows how we feel?

[And obviously they feel love. But it feels weird to say that, even if he's not saying it directly to them. Donatello huffs, shaking his head with a bemused smile as he describes Raph.]

Your Raph is the furthest thing from mine. Our Raphael has an awful temper. He and Leo butt heads all the time because Raph wants to be in charge, but everyone knows that Leo's got the more level head.

Definitely not sorry that I won't hear them fighting for a while.

[He looks at the empty space, then at Leo. Oh boy, this kid is in for it.] Multiple times a day, actually. Every day.