How sweet, "a really nice virgo man." Well then if he was so nice I'm sure he didn't play you but rather you just jumped into bed before you knew his intentions. Which is fine but what isn't fine is you expected something to develop just because there was sex.
Did you have the common sense to discuss what would become of the relationship now that you were intimate? If you'd both close down your profiles? Would you become exclusive while you discovered if there was enough there to for an actual relationship? That you'd like to cook him dinner on (insert date here?) to see what he thought about that Or, did you just say thanks and goodnight while you remained in the dark about his intentions?
Is he still logging on every night?
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion