Well, she doesn't eat red meat.. and only usually eats chicken and some seafood. She's even suggested that she become a vegetarian while we've been together but says she can't until we moved together because she wouldn't be able to make herself... and she laughed about that. But she was dead serious about becoming a vegetarian through no coercion from me.
I think she is making excuses like I've said, but I don't think there's some major reason. I believe the breakup was either due to stress, pressure from her parents, or inability to continue to deal with the distance. I don't believe it has anything to do with another guy. I also don't think it has anything to do with her not wanting to be in a serious relationship anymore.
When she would get her period, she would be both happy and sad. Happy that she got it because she knew we weren't ready enough for a child, but sad because she really wanted a child with me. This happened just last month... in July... and was happening for a couple of months before that. I don't see how she could go from that to not wanting a serious relationship in a week.
I'm definitely confident there's no other guys though. Though all women like male attention to an extent, she feels more awkward around it. I remember when she was at the mall with her mom and sister... she stayed out of the store to call me while her mom and sister went in. She sat on a bench, we talked, and then she got off the phone. While she was there, some guy sat down on the bench next to her and she got up and walked away because he was too close.