That was before we met.
My fiancee was partying with her best friend a few years ago, both 22 at the time. That night they met two older men, maybe in their 50's (my fiancée first said they were in their late 40's, then corrected them, they could have been older) and partied and had drinks together. The girls were invited to the guys' hotel room for more drinks. The girls were a little tipsy and went along as their train home was a little later.
You could clearly see that she was embarrassed when I asked something and she didn't go into it any further. And didn't think about it any further. So by coincidence I saw a photo of the hotel room with the two of them on her laptop (title: ...hotel) and it's light outside so they stayed there overnight.
Ever since then I've been getting turned on by the thought that she let old farts, in their 50s fuck, her on a night out.
Now I prefer to watch porn of this genre imagining how she was fucked. Sometimes when I have sex with her I have to think about it and then I cum really hard!