My wife thinks she might be a lesbian

[Dyno]

After being married for 13 years and together for 15+ my wife last November said she wanted a divorce which totally blew me away we have never as much as had a fight. We have 3 wonderfully boys 13,11,4. Reasons for divorce was that I was to struck with kids, whenever we travel to our northern mi home that she usually drives my mother and out kids and she has had enough of listening to her health issues. I work night shift my wife works day shift she would leave on fri aft work I would leave sat morn after work to head north. Sometimes we would all ride together. I know I'm kind of rambling on but I just don't know where to start. I've always thought we've had a great marriage and everyone around us did also she seemed like she was always happy before her new position at work which was very stressfully for her. I've always been a good listener and took great pride it that fact. I have also spoken to a close trusted friend who know be better than anyone so I can't B.S him I needed honest opinion no fluff. After wife asked for divorce I was at a total loss and asked the usual ?s what did I do, what can I do to make thing better she responds with nothing I've made up my mind I've changed I'm sorry and so on. I tried for a few weeks with stepping up my game with doing more chores and getting kids more involved with helping so as to alleviate as much stress when she gets home from work. I would always wait to leave for work untill she got home up untill it would make me late for work. So I asked my done to help with my 4yr old untill his mother came home which he did willingly. Well to make a short story long she has been real short with kids for last fer months threatening to leave telling them that she has been living a lie and has been unhappy her entire life. I would just defend her and say her job is so stressful. My 11 and 13 yr old kept asking ?s in which I didn't have the answers such as where is mama why is she never home when you are, why does it take her 2hrs to go get a coffee,why is she at the grocery store for hours and only come home with a gallon of milk. This is all going on while I'm at work by the way. Well just recently after the new year she wants to start having alternate weekends with kids to get them adjusted for when the D happens I was and still against it but I can't keep her here I've always been flexible with me working nights and her havin to be home with kids keeps her from seeing her friends so I never really thought to much about it of she wanted to go out with the girls fer a drink on weekends or wherever. On a weekend that I took my 2 oldest to cabin my wife took little one to an indoor theme park for the night. I thought that was great give her some mommy little guy time. Well the days following my 4yrs old said he had a new girl friend so I was all playing with him and acting like a kid my self and ha out of know here said mama sleeps with girls I didn't think much of it because she sent me a text and said that she spent the night at her friends house with 4yr old because she had a drink and didn't want to drive. In the weekend following 4yr old said it more n more. That it when I ?ed my wife has she been with a woman she of course denied it. So I took it for what it was and just figured kids imagination. Well last week on monday I got to hamper to grab a towel and knowed over a bag a brochure fell out selling lesbian cruises I about fell over she came home and told me she thinks she's lesbian had feelings since she was a little girl I blew up totally pissed off. Not that she's a lesbian but the she cheated on me which it explained why it it is so easy for her to give up on us. Please I need help I do not want to lose my wife but If she really had changed I feel I don't stand much of a chance. Btw she filed for D and served me saturday