Is my boy friend toxic or me toxic?

I have been in a relationship with this guy for the past 6 years. In the beginning, everything was nice and he was nice. But after some time, he started being overly possessive, like insisting that I should not go anywhere without telling him or without him. At first, I thought it was care, but now I’m not sure. He says he loves me and I believe him, but he is extremely toxic. He doesn’t let me go to college because he thinks boys will flirt with me, and if I do go to college, there's a big fight about why I went, accusing me of wanting attention. He asked me to delete my social media, so I have no friends and no access to anyone but him. If he says something disrespectful and I react with anger, he makes the whole issue about my reaction and doesn’t care about why I reacted or how I felt. He is also very disrespectful in fights, using verbal abuse and then ignoring me for months. The problem is I am stuck because I love him and I feel scared that I won’t be able to move on or see him with anyone else, as he is my first love and 6 years is a long time. But his behavior is very toxic and it makes me feel suffocated. What should I do?