This patient support community is for discussions relating to relationships, abstinence, arousal problems, birth control, cohabitation, commitment, communication, couples counseling, desire, sexual technique, and sexually transmitted diseases (STDs).
Guys want to have sex. That's what he was doing - having sex, and for some reason you were giving it away for free.
Next time you have sex, make sure it's with a guy who is giddy in love with you. Otherwise, you're just giving it to some guy who just wants sex.