Overly- attached!?

Have you ever liked someone so much that you put your pride aside for that person ? I've been seeing this guy for a month now, an honestly I've been feeling uncomfortable around him but somehow I keep quiet because I like him so much. I feel like I'm being used but I can't manage to leave. I don't why I feel like this. I know the right thing to do is cut ties with him but I don't want to leave him. I feel like I'm stuck in a box. Idk, sometimes I have hope that I can be the one to change him to do the better but I feel lost.