Known as a slut! HELP 😰

So one time I kinda had a thing with this guy and we didn't date. I had sex and sexted with him on snapchat and everything was fine. Mind you I was very cautious and never put my face in it.

But little did I know he spread rumours (well, technically it's not a rumour since we actually did it) and I don't know how he told everyone about it but everyone kinda snicker on me and act as if I'm a hugeeee slut!

I mean even he had some of his friends message me INTENTIONALLY a couple of times like:

"so you like making love?"

"would you ever send me one?"

"i know what you did"

"hey i like you, and i know everything"

"wanna play with me?"

"i wonder if he lies"

I don't know why but I feel so humiliated. Idk what his problem is, but I fucking hate him now. People have sex every day and it's okay and he's being an ass. Everyone acts like they find sex weird.

Am I being slutty having sex with someone who's not my boyfriend? How should I react? For now I never commented or say anything about this. But I know people are talking.

I feel so disgusted at myself for having sex with this one particular guy. I've had sex with two other guys but I REGRET ever doing it with him!