The reason I want you to put a shirt on is, well, because, um. . . " "You've never seen a guy with his shirt off?" "Ha, ha. Very funny. Believe me, you don't have anything I haven't seen before. " "Wanna bet?" he says, then moves his hands to the button on his jeans and pops it open. Isabel walks in at that exact moment. "Whoa, Alex. Please keep your pants on.
That the last two letters in her name were the first two in his, a silly thing he never mentioned to her but caused him to believe that they were bound together.