How do you break up with a girl when you love her so much yet she's so unreasonable?

Dude I have been in the same situation...it's hard it really is and I can relate. I was exactly like your girlfriend and my ex was like you, my relationship did end because he broke it off but it was the best thing. I felt like the relationship was going nowhere and I knew we were both unhappy but didn't do anything because I was scared of not being in that relationship. When he broke it off it hurt but we are now both so better for it. I think it is probably time to break it off, I think you two both need time apart and to live separately. Good luck dear