For most of my life from puberty onwards I considered myself straight/bi-curious. Growing up in a conservative area of western Canada and going through puberty right as the aids epidemic took off, I heavily repressed my curiosity. It finally took severe nerve damage to my pelvic floor from a tumor in my spine and the resultant loss of function to my front end to get me to open up. I knew from playing with my ass as a teenager that I would like bottoming and the only way I can orgasm now is from prostate massage. My ex wife was not interested in pegging as she was too submissive. Eventually we opened our marriage so she could be sexually satisfied again as I struggled to be into playing with her since I no longer got an orgasm out of it (selfish I know). She became OK with me exploring my “bi side” since it allowed me to orgasm by bottoming.
After a few years we both realized I was more into guys than women sexually. We mutually decided to divorce earlier this year. We remain great friends and co-parents and still love each other in a closer family member way. She has had a steady boyfriend for over a year now who is a great guy for her. He and I get along well. I am able to now live life openly as a gay male.
I don’t think you can turn a straight person gay. I think most people have some level of fluidity when it comes to sexual orientation. I also think there are a lot of men and women out there that like me have repressed their true sexuality to conform to societal expectations. Unfortunately most of those individuals will live their whole lives closeted/repressing themselves for fear of being what society thinks.