So my ex boyfriend (guy 1) was a total emotionally abusive jerk. Wishy washy about if he wanted a relationship with me, and literally treated me like crap. Recently I reconnected with one of his friends. We've been talking lately and we hit it off so well! I don't think he knows that I dated guy 1. We've made plans to grab a bite and drinks soon. How should I approach this? Should I ask my ex if he's ok with me seeing his friend? I don't want any bad karma here.. even though my ex technically cheated on me more than once I think (breaking up with me just to sleep with another girl then coming back so he wouldn't have to call it cheating) HELP!
I also don't want to hurt my ex because I care about him tremendously. I don't know what to do :(