Chase is so used to alcohol in the house and the family that he doesn't even think about a lack of performance. Usually, his mother had just crashed on and drank as much as she possibly could before passing out, so maybe it's not like she could've done anything either. Moved by Ben's words, Chase frames him and steps into his space to pin him to the counter, thinking 'what the hell' and that the world is ending anyway.

So that's why the kiss is a little hungrier than usual, pushing in and demanding that Ben part his lips within seconds of starting.