Falling Out

So my boyfriend and I have been on and off for 5 years. I have broken up with 2 other ex's just to get back with him. But now, I feel like I'm losing interest in us- especially him. We don't do anything special. I mean I'd say he treats me just fine compared to other serious problems in a relationship, but my friends and family tell me to just go find someone else. Another problem is that he has 0 sex drive 🙄 which makes me insecure.

I'm graduating this spring and then I have to go back for my Master's. I feel like he doesn't take school seriously like I do, along with other things. I feel like as we grow individually, we're growing apart as well- me farther away from him and I'm not sure if he notices or feels the same.

Opinions....? Help!