Should I stay in my current relationship?

I like the girl I'm with, but the thing is the relationship isn't going well. We barely get to talk to each other since I moved 4 hours away to college and she has college too so there is no time to talk. Also the relationship isn't very fun to tell the truth :( i don't mean to sound like I want more but the thing is we're practically just good friends there is no romance practically. I don't wanna hurt her feelings if she really does like me but I feel like she is only in the relationship cause she felt sorry for me.

There is also my ex, who is the person who I love dearly. I know I should focus on my current girlfriend but my ex is the one who I am in love with and it sucks cause she is with someone else. It's nice that I get to hang out with her from time to time since she goes to the same college but I wish I was in the relationship with her. I don't see their relationship ending anytime soon either nor would be selfish and try to break them up just for my own gain.

I really don't know what I should do :( I'm lonely in my current relationship and unable to be in the relationship I want.