I took the blame and it sucks

Bel

I broke up with my ex three months ago, he was a great boyfriend but was very jealous and this held me back in making new and many friends at uni.There wasn't any bad blood and we stayed friends. My best friend however is dating his twin brother. Some time ago we went out and i kissed a guy, she did too and to cover for herself blamed it on me saying i pressured her. (i didn't) Her BF already thought i was a bad influence for breaking up with his brother so I could be social and make new contactes and so he didn't need much convincing blaming it on me. I let her do her thing but I now feel kinda bad because my ex texted me saying I was fucking up someone else's relationship just because I don't want to be single without my best friend. It sucks he's mad at me but I need my best friend more than I need him..

My friend has been avoiding me to ensure het Bf but I just feel like the whole situation is just crap.