advice on relationships

OK so my boyfriend I've been together for almost 2 years, started dating my freshman year of college and he was a senior in high school but he attended the same college I did for college credit plus. So he may call it's so much fun and enjoyable. Then he decided he wanted to go to the bigger College of Our University, I couldn't be happier for him because I was planning on transferring myself and the next year and a half. Want to go to college he got a little attitude tried distance and self. He started telling girls he thought they were attractive when he was still with me. In December he left me started dating another girl they broke up 25 days after he came back running to me going the grass and greener on the on the other side. I figured out I want to be with you. Well I told him he would have to work for it because the trust I had for him was gone because he treated me like I was nothing to him. So he worked his way back up I took him back things are going great until about two weeks ago when I found out he told another girl that I was needy and didn't know what he wanted to do because he felt sorry for me because people underestimate me. But he still loves me he said to the girl and doesn't want to be without me. Question him and told him that he could have anybody he wants and I would always still be by his side as his best friend and he said no I want to be with you forever you're my dream girl. So things I thought were getting better until beginning of the week when he went off and said I was being needy and being too clingy and I said sorry I thought you texted me so I figured you could talk he's like he told me that he believed that I was failing in life because I failed two midterms and he wants someone successful. He still says he loves me and just doesn't know if he wants to be with me or not. So now he says he doesn't know if he wants to be with me. This kid is the love of my life. The first guy I had sex with without a condom. But how I feel like I may not be good enough. What should I do?