Love Vs Sex

I have been in a relationship with my boyfriend since sophomore year of high school. Everything was great at first it was new and he was my first real boyfriend. Now we are 20 going on 21.He’s a Taurus and i’m an Aquarius and I believe he acts just like his sign he’s hard headed , short tempered and sometimes is a cry baby when he doesn’t get his way. Now he’s a great guy and we used to have a lot fun together when we first started out dating maybe the first 2/3 years were great then when i got back from college it started getting a little harder to tolerate him. We don’t see eye to eye anymore, we argue almost everytime we see each other we don’t have much to talk about anymore. He says he hasn’t lost the flame for me but I think I have for him, I lost my virginity to him before everything was fun and new but I really didn’t like how he always wanted to have sex and at this time we were juniors in high school back then I was 17 so I was naive I figured I was obligated to have sex with him because I was his girlfriend. He wasn’t a virgin but I was and after he took my virginity he always made it seem like I was obligated to please him...Now to certain extent I agree but that’s only if you are in love with your man. Our sex life now is non existent he’s always in the mood and it’s like with me I’m never in the mood even if I try to be in the mood my mind is still telling me you don’t love him anymore. When we do have sex I’m not into it at all, i’m more worried about him finishing so he won’t nag me later. I have a sex drive it’s just not active with him, the sex is boring now and i’m not attracted to him anymore. I can’t even tell him how I really feel because he just will never understand being friends is the best solution for us. And other times I think is it worth being in this relationship if the flame is gone, the communication is gone everything. I don’t know whether to try to fix our relationship with him or leave it alone 🙄