Keep it to yourself and do not label yourself as a non-virgin. It he gossips, tell everyone he is lying. Start over as a practicing virgin and don't do this "stupid" thing (no insult intended) again. Save it for someone you love next time.
You make it sound like it was not consensual sex. Did he force himself on you? If you wanted to lose your virginity, then I guess any guy will do... However, if you wanted a "relationship" with this guy, perhaps you should have been friends first. Whatever the case, you are now "de-flowered" and think about it; if you lived to be 100 as a virgin, the Mortician would eventually bust your cherry. LMAO