A boy his age would usually think "We have sex every day? You mean we GET to have sex every day!" but eventually there's gonna be a day where you just don't feel up to it.
I don't feel bad for her at all, she's a bitch and a pedo and now apparently a murderer too.
I feel bad for the ex-fiance. He's a really unlucky guy, she used him and then dumped him, I hope he can find the strength to move on with his life in a healthy way.