Am I a fool???

My girl friend had this dishwasher so worked with. The first time I met him he was on a bar stool sitting next to her doing a shot.there bartender called him her shot buddy. When I ask her who he was she told me just a dishwasher she was buying him a shot and this was there first time. Being called a shot buddy's gave me the impression that this was not there first shot. So I really didn't care for him he makes me uneasy. She told me 2 or 3 different times how cool he was how awesome he was how he's such a nice guy his plans in life, all kids of things. Said the other waitress told her about him. ( makes me uneasy ) A month later she sold him an extra concert ticket we have and gave him her # and told him to text and come hang out. He never text & I was going to act cool but I was not happy. A month later I took her daughter to her first concert ( no drinking for me ) the plan was to pick her up from work at 10. I called her and told her the show would be a hour later and she was fine. @ 11 I called her and she was trashed. She told me they won't give her any more shots she was at her limit for employes and her and Keven where going to a real bar. As I raced back I got a text telling me how they had to go to his house first. I surprised them with how fast I got there. He posted up at the door and told me she was on her way before I even got out the car. She kept going on about his girl friend and how cool she was to the point it felt like she was trying to convince me she was real or something, it felt wrong. We fought and came really close to breaking up over that. All she did was call me crazy and out of my mind and I need help.. A week later where off to the cook Dave's BBQ and he wound up there, she said she didn't know. We just walk up and sat down, I kept waiting for her to ask where his girl friend was, we didn't see her and I was curies and wanted to meet her and figured she would want to know after all her going on about how she was the coolest person someone she could be best friends with. But never a word was said at all not once. We got in a nether fight over this guy. I'm ashamed to admit it but I even deleted him off he face book. I have emplaned more than once how I feel about him and we have fought 4 or 5 times I hate dropping her off at work when they work together. She tells me she knows nothing about him at all but she know the other 9 people there very well even the cooks and other dishwasher. A month later I grabbed the tablet and her face book popped up and there he was showing off his new tattoo. So a fight broke out I was mad she add him back knowing how I feel right or wrong he makes me feel un easy. She tells me I'm mad and crazy and over reacting she had to add him back to look at a pic he posted of there bartender. She quit her job a week and a half a go and I didn't give her any shit over it even though we are now down to one income mostly because keven should be gone and out of our lives for good. Well 3 nights a go she got drunk alone And I found she decided to hit him up on face book , and ask about her friend. Tell him about her she's home all the time and all she has planed the next day was he dentist. Now we again have fought over him, I'm not understanding why she can't drop him as a friend. She told me she had to chat with him to bind out about a waitress they work with. And I know for a fact she could have ask 6 other people male or female she used to work with. She didn't have to sit and chat with him. We are still fighting over this guy and its been a year now. She just keeps telling my why she had to Talk to him all these times. I have explains to her how I felt and how she has and is changing the way I feel and see her, how this guy is going to be the end of us. Her last comment today was she doesn't want to be embarrassed and have to tell him he's causing problems at home. ....... So am I over reacting over this guy? Is it in my head? Or is there more to this guy that she tells me she doesn't know. It's been a year and a dozen fights me telling her I'm completely un happy. All the things that don't add up. And the fact that she won't let him go even at the cost of our relationship you tell me plz I would love outside input if I'm the or she's full of shit...

hey i cant tell you what you should do but when i read your message i even thought it sounded strange the way you explained how she was acting, also if that was me i would have looked at his facebook profile to see any pictures of his girlfriend. i know its hard and your feeling really insecure but try not to do anything too hasty otherwise it might blow up in your face. im sorry im not very helpful but its just very hard to determine what to do in your situation especially if you still love her.