If this is crossing the line, just let me know, but are your 'rents super religious? (I come from that background [and I enjoy it If so, there are ways to persuade them. If they aren't, I'd just talk to them and give them reasons. But *seriously*, just try giving them the numbers. Stats and whatnot, and how sex isn't dirty-it can simply be a means of reproduction. If you'd prefer to inbox me, we can communicate back and forth and brainstorm (if you think that would help).