pls help

I'm feeling very frustrated I asked my bf to stop talking to an old friend of his bc he's fucked over so many of his so called family and friends. he fucked over my boyfriends brother and even his girlfriend of years. he lied to me and now I find out he's working with him and giving him rides to work everyday what do I do? my bf asked me to stop talking to a good work friend and I did so why do I not get the same? this boy gives me really bad feeling in my stomach