[He knows you're being facetious but a small part of him wants to protest that Keith can be plenty friendly and sweet!!1]
I... He keeps pressing the buttons so that I don't. [Cause he's an overprotective dweeb and he loves him. And yet, alas, here he is anyway.]
I'm sure he's doing alright. He can hold his own and people like him. [Does it bother him that Keith keeps showing up on "dates" with other people? Yes. Is he trying to not be a jealous goblin about it and failing? Also yes.]