Why am I being called a SL*T when clearly I'm not?!

Okay so I'm 18 and the guy is 28... we only kissed once. DID NOT have sex (I'm still a virgin btw, and the kiss was my first kiss too) the only thing is he got naked and he took my bra off (I wasnt fully naked, he only saw my breasts) and we kissed... other than that we did NOTHING! Why am I being called a SL*T when clearly I'm not.. like he was my first experiance who I JUST kissed, did nothing else..

---Some of my friends are calling me a sl*t . not him, I dont even talk to him anymore

Tell them to stop if they don't find new friend your better Then them

Well one if you told them that you know it looks wrong, but then again they could be just jealous, not alot of people or virgins so be happy fuck what they say if it bothers you then dont tell them shit anymore they lost the privaledge if they are spreading rumors