I don't know what's more hilarious: Rex's continued insistence on wearing his tryhard backwards cap ("See, Niki! I am down with the hep kids, yo!") , or the idea that he could teach anyone how to woo a girl.
So it looks like Rex and June are about to lose their boy toy to a girl his own age. It was bound to happen. A kid can only go on so many awkwardly tense fishing trips.