[The fact that it isn't her first time is what he's clinging to right now and if he hadn't known about her prior experience or if she hadn't been the one to suggest it? This would not be happening. But like always, she pushes him to go further than he normally would be alright with and so that bra is coming undone.
It takes a try or two but he gets it open with surprising ease - guess all that sleight-of-hand practice in college came to more use than he ever thought it would. Feeling just a bit proud of himself, he leans in to catch her lips in a soft kiss.]