My story to turning into a sucker for being fucked

Yes of course I had a gf which we had a normal relationship and after a while she started to bring up ass play on me and I didn’t mind as I thought it was normal for my partner to touch me in ways she liked and after a while she brought up using strap on, I was reluctant at first and nervous but ended up saying let’s try it out, After that she got a strap on and that day we was gonna have normal sex like we usually do but I was a bit tired and she told me lay down and she got the strap on out and said it’s time to try it. It was hard at first as she needed time to stretch me out but OMG OMG it was amazing and I couldn’t control myself but to moan like she would with me and it turned her on so much that she couldn’t stop and I got so horny from how amazing it felt that I picked her up and put her on the bed and jumped on the strap on and cummed on her while she fucked me. Since then I couldn’t stop thinking about being fucked all the time and even thinking about shemales and how I would definitely let a shemale fuck me however she likes.