<human>: Can you succinctly summarize the text in 1-3 sentences?

The first two months of our relationship was great, honeymoon phase was awesome. Then about 2 months in, she grew distant. She started texting with a couple guys pretty frequently (she claimed were friends). She would go out with girlfriends dolled up but would still text me at the end of the night, asking to come over.

About 2 weeks ago I found out (though some read FB messages of hers) that she was talking with her Ex who lives far away. The messages were asking a guy friend if it was normal to think of an ex more than her current boyfriend (me). In the messages she said that she DID like me, wasn't in love with me yet. She also mentioned that she didn't think of him when she was with me. She was in duress as to if that was normal or not 4 months into a relationship. I also caught a text to the Ex. It said, "I care about you" She explained it as platonic in nature.

I confronted her about the distance and the disrespect with her texting other guys. I was about to leave. She told me that she would stop talkign to the guys, the Ex included. She said she would put in 100% becasue she didn't want to lose me. I have noticed a complete change in behavior. We went on a trip together (to the guy's city, of all places) and she was NEVER out of my sight. she showed me her phone the entire time. I am 100% sure there was no funny business that went down. 

I just dont feel 100% comfortable. It has been about 2 weeks since I saw the FB messages. and a week and a half since i confronted her. How long do I wait? Would you stick around? Should i give her the benefit of the doubt?
<bot>: Girlfriend grew distant. Called her out on texting other guys, including an ex. She has since dropped that behavior and made a substantial effort to fix the relationship. I dont feel 100% comfortable.  What do I do?