Actually I agree with the OP. Sort of. If a man pursued me and we slept together and then he didn't call... I'd write him off as a douche who didn't deserve me. I wouldn't call him either, but that's me.
@Used - I don't know how you choose your partners, but in future you should probably wait longer than 2 dates to jump in bed. That's not a criticism. It seems to take you longer to decide if a man is a quality guy looking for a long term relationship. It also seems like you are still vulnerable from your last relationship. In the end, people are out for themselves and while, yes, this guy may be a jerk who was only looking to get laid, in the end if that's not what you are looking for then you have to protect yourself. The longer wait time will also weed out the men who are just looking for casual sex. Good luck.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh