My fiancé hooked up with men for 2 years?

I (woman) just found out that my fiancé (man) hooked up with men in his late 20s. He was in college at the time and had never had a long-term relationship. He said he used to date a lot of women when he was younger, but never mentioned this phase of his life (2 years 4 different men) I was on his iPad the other day, and saw the craigslist listings of him being a “bottom” and giving oral. I know I should be more progressive and not grossed out but I don’t know if I can be. He is amazing man and we have a child on the way. I just don’t know what to think anymore. I know I love him from the bottom of my heart, but I also know that intimacy is a big part of our relationship and I don’t know if I will be able to get that image out of my head. Never in 1 million years would I imagine him to do that because he’s such a strong manly man. I confronted him and he said he was confused and didn’t want me to tell anybody so he’s obviously ashamed but where do we go from here? We are supposed to get married and have a baby girl next month. Has anyone else dealt with a situation like this? Is this something you were able to get over and work through?

Updates
+1 y
He says he’s straight and he was just confused
Updates
+1 y
And very lonely because all of the women he dated would always break up with him or not work out
My fiancé hooked up with men for 2 years?
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