Is this worth it?

So I’ve been dating this guy for about four months, his name is Eric. Okay so Eric’s best friend, Kevin, seems to be getting in the way of me and Eric’s relationship. Every time that me and Eric have planned to hangout he has ditched me to go see Kevin, or if me and Eric are hanging out he leaves to go see Kevin. Me and Kevin used to be friends many years ago, but now we both hate the living sh*t out of each other. Kevin makes these jokes on topics he shouldn’t joke about; the topics can range anywhere from chopped up dead babies, to rape, to extreme sexism. So enough said, I feel extremely uncomfortable around Kevin, and Eric knows this. So whenever me and Eric fight, it’s usually about Kevin. I feel like Eric would rather hangout with Kevin than with me. When I tell Eric these things he says “I’m sorry I’m horrible person to you...” but he continues to do it. Every time we fight, the fights seem to revolve around Kevin. After we are done fighting Eric goes to Kevin to see him and talk to him about the fight. He never comes to me about the fights nor does he talk to me about them. When Kevin becomes aware of these fights he tells Eric to immediately dump me. I just want Eric to understand where I am coming from and to listen and to communicate better with me but he either won’t do it or just blames me for everything. Is this worth it anymore? I really love Eric but this is starting to hurt me too much to handle. What should I do?

(Names have been changed)