I dunno. I never had sex with someone unless I really, really liked them, except for once, when I was in college, and..... you guessed it...... very drunk. After that I was embarrassed to see this person, which was really too bad. We had a good time together otherwise. I was on my way to the "really, really like" stage, but I think the sex ruined it.

If you both agree beforehand, well, go for it. But be careful.