Well Ethan doesn't want to come right out and say that Victor almost died. That all those drugs he'd been messing with had hurt him so bad. It's not something he's ready to admit.
So feeling poorly will have to do, as a euphemism.
"Valentine's Day it is, then. Why don't you take care of the wine and I'll get the chicken going. I know you're not as much of a carnivore as I am, so I figured we could meet in the middle."