I need help with friends/guys and exes?

Okay so this is what happened. My best friends boyfriend broke up wit her. She was all sad lalalal nd i had 2 hear it over nd over again..she gets like the best guys in school then they dump her nd she gets another guy in a week. So anyways this guy broke up with her and now im frineds wit him. We always laugh and he pokes me nd calls me maid and stuff, so we r pretty good friends. And mi friend started saying how she is kinda pissed off at me about being friends wit him. So i said okay i wont tlk about it nd ill try not 2 hang out. So today i didnt even talk to him but when i was walkin wit mi friends 2 cl they wer sorta ignoring me so i decided to speed ahead 2 not be late 4 clsas. Then the guy catches up wit me nd tells me 2 wait up. And mi 2 friends saw nd wen i saw her again she was so upset nd then she finally tld me how we wer laughing nd i was flirting. So they did not even bother asking me first, just umed what happened. I mean we wer talking about gum and one of the teachers. So now mi 2 bestest friends r mad at me nd i had nuthin 2 do wit it, i wuld nvr steal him or date him, wer r just friends nd i tld her a million times. Now spring break is in up nd they r gunna prly hav a sleepover nd rub it in mi face nd tlk about me lalala. So what should i do? i know whats right and wrong and i think i did nothing wrong.