I've never understood why some guys are unwilling to have period sex. My wife refused to even talk about it for a while because of her experiences in past relationships.Put down a blanket for easy clean-up, and shower afterward if you feel like you need it. Even without menstruation, you're not all that far from bodily waste exits anyway. Don't shame someone for having natural bodily function; jump in and embrace it. Then again, I like the taste of blood. Ehh I've had good and bad experiences with this. Good: some girls are hornier and more willing to try new things Bad: my first one night stand in college was a girl on my dorm floor who didn't tell me she was on her period, woke up the next morning to a murder scene