My friend and her ex broke up a yr ago but it was messy, she was flirting w other guys and he was talking to another girl. Technically they both were cheating, both in the wrong. I became friends w him after encouragement from her. She still thinks about him occasionally and always tells me that she trusts me with him bc she knows I won't make a move. She also has made it clear that she thinks people that go for their friends exes are rlly low. He and i have gotten a lot closer over the year and we have been feeling a lot of sexual tension for the last few weeks and recently on the bus we have let our hands wander and we hardcore flirt. His hands make their way in my panties and bra and today he fingered me. He wants to have sex and honestly so do I. I feel so guilty that I have been flirting w him and now I'm so attracted to him. I know she'd lose so much respect for me if she found out. He's talking to another girl too and she doesn't know everything. He insists that they were never exclusive but I have my doubts. He is so fucking attractive that ik I need to stop but I cant bring myself to. He and I decided to fuck once and go back to being just friends but idk if that'll last. Fuck he's so amazing but it feels wrong but it's technically not her jurisdiction anymore, after all they've been broken up for a yr, but I shouldn't be doing this.