<human>: I can't tell the whole **6-year** long story, so I'll try to make it as short as possible.

We've had our ups and downs, and since our last breakup and getting back together (Feb-Mar 2012), everything seemed to be going fine. Now I've found out that the guy she had a crush on (and was one of the reasons we broke up back then) is still making her "act like a little girl". They never hooked up, they weren't even on a date. She just occasionally sees him on the street.

Now, I'm a really tolerant man (25) and I've forgiven a thousand things someone else probably wouldn't have, but this... She's been telling me she wanted to get back with me because she realized I was the love of her life. She still tells me so.

Should I break up with her because of this?

I really hate her right now because I didn't ever do anything to deserve this and I feel like my insides are going to cause the apocalypse. 

Any advice would be nice. I wanted to marry this girl, now I don't know what to do...

Is a crush reason enough to break up with her?

Give me a shortened version of the text
<bot>: GF of 6 years has a crush on a random guy for over a year, I'm not sure what I'm supposed to do since she's the love of my life