very good question. i know it may not sound believable coming from somebody my age but, aside from mutual masturbation, i use condoms for literally every sexual act. my boyfriend's 30 and is starting to lose interest in sexual activity so he doesn't mind wearing a condom when i blow him, he still gets off just the same. i DEFINITELY don't sleep around, and don't do anything with somebody unless i've known them long enough to trust them in my apartment by themselves. that obviously eliminates a lot of people, but that's the point.