Boyfriend wants me to stay out of it

My boyfriend doesn't like my best friend at all. He says she constantly manipulates me and gets me in bad situations. She says she's pathetic and a user. My mom and my other friend feel the same about her. I tried to get her and my boyfriend to get along but he doesn't want anything to do with her because a few months ago she put me in a bad situation and I ended up getting taken advantage of by a group of guys... We talked it out and I forgave her. He messaged me a little bit ago saying she thinks her boyfriend is cheating on her. She needs me to pick her up and drive to his house. She got her license revoked. I told my boyfriend he said no right away and told me this is how it starts. That she will put me in a bad situation and I need to just stay out of it. She is crying and really needs me. Should I ignore my boyfriend and go or stay out of it... I feel like a bad friend