<human>: I've been with my GF since February 2013. We dated for about a year (long distance, 2.5 hour drive), then we decided it would be best if she moved in with me. 

Fast forward, we move again into a new apartment that has 2 bedrooms so that her two children can have their own room. During that move, she found out that her best friend was being abused, so she asked me if she could move in for a few months. I said that it was just fine as long as she didn't mind the kids sleeping in the living room. 

Fast forward a few more months, I find out that I am falling for this new roommate. It is obvious to my girlfriend, since I am very sprightly and gitty around roommate, but not so much around my girlfriend. This causes GF to question the relationship. GF asks me if I like our roommate, I tell her that I do like her and that she makes me very happy. GF asks me if I am in love with roommate, so I ask her what is love? I then tell her that based on that definition she gave me, I am indeed in love with our roommate (however, I am not physically acting on it).

Fast forward to Thanksgiving, GF asks me if I am in love with her (GF, not roommate) I tell her that I love her very much, but I do not believe I am 'in love' with her, because I do not think of her as much as I think of our roommate. Now she wants to break off the relationship because she thinks I am going to just keep finding other people that I fall in love with (remember, I always tell the truth, even if it hurts, but I will never act out upon these feelings).

Can you give me the gist of the text in a nutshell?
<bot>: I love my gf, but I'm not in love. I end up falling 'in love' with roommate. GF wants to break up, despite being together for over a year and a half. Advice? Thanks!