I dunno about the whole "eldest child" thing...I am the oldest and my parents were totally cool with me having my boyfriends over and whatnot. They've even purchased me condoms--and I'm not only talking tiny 12-packs of Trojans, I'm talking the Costco mega packs.
But I've been through a similar sort of situation because, quite frankly, in college you have to deal with roommates. A lot. I've had sex in some very interesting places because of it--including the bed of a pickup in the parking lot outside my dorm (there was a canopy, thank god). You just have to be creative and committed to making it work
