Love 50/50

hii, I’m 17 as is my boyfriend. we’ve been together for 1 years and 5 months, I’m in love with him… we fight non-stop but I can’t leave him. I basically live with him and his family. he’s a control freak basically. you know the saying too much of a good thing isn’t so great… its true. all he wants is sex - I don’t. its gotten boring. before I met him I was going throu a rough patch, he was there for me, so we started going out. I was a lively girl, always out and about with friends and family… now im not allowed out with mates, if im at home for too long he gets aggy with me-its as if im a married woman and im not! money is tight…so he helps me out. I love him but am I with him for the wrong reasons? there is this other guy, hes wonderful… understands me and loves me for me… I have feelings for him but I can’t leave my boyfriend. I’m tired of being treated badly, I know I could do and get better, but I’m scared to be without him. he lives in the next road to me hints why I’m always round there and not home. what happens if I leave him and me and my mate don’t work out? I would have made a huge mistake! please help me… I probably havent written this very well as there is soo much but please try and help. thnkyou