I'll try to keep this short.
I've been dating a co-worker of mine for 3 months now. From the first time I saw her I completely fell for her, we have a lot of chemistry, make each other laugh a lot and always seem to have fun together. She told me she has been in really rough relationships in the past and has a hard time accepting my feelings for her at times, that I'm different than any other guy she's met that I'm a good guy. She requested that we keep our workplace romance a secret and although I questioned it, I respected it. Thursday she told me that someone at work asked her if she was dating another guy we work with (We'll call him Jim) and when she said it, she blushed and seemed to glow a little. Friday, I asked her if she has ever been with anyone we work with and her face gave it all away. At first she didn't want to say who, then she revealed that she had been with Jim but it ended before we started seeing each other. Suddenly things changed and she started getting really defensive. I kept asking questions and asking her to tell me the extent and she revealed that she slept with him three weeks into our relationship but hasn't been with him or talked to him since. I was really upset and I left. She texted me and said she would do anything to fix things between us. I thought about things and and in all honesty, I have truly never met anyone like her and care for her more than anything. I made a list of things that would need to happen for her to regain my trust and one of them was for me to see her phone records to see if she was telling the truth about Jim and establish a baseline of trust and honesty from that point. When I looked at her phone records I saw that she has been talking to him and exchanging texts up until a few weeks ago. What really got me was that she texted him Friday and Saturday night a few weekends ago while I was away on military drill weekend with the Army three hours away. At 10pm I texted her goodnight and according to her phone bill 2 minutes later she texted him. Same thing the next night, single text to him. I told her that flat out seems like a booty call. She says she doesn't remember why she texted him and that she did not hook up with him or see him. In all fairness she hasn't communicated with him for a few weeks now according to her phone records. Am I a fool here? I'm so clouded in emotion and my feelings for her that I can't think rationally. Am I a fool to believe that about the weekend I was gone in September? Am I a fool to think I can trust her again? Am I a fool to believe it won't happen again?
Completely, totally broken hearted.
A little background info, I'm a male in my late 30s, she's in her early 40s.