Femanons, would you date a guy who you know has been fucked in the ass by other guys before?
How would you respond if you learned your boyfriend had done things like that before your relationship started?
They like yaoi fantasy, but I doubt they'd like their real boyfriend having gay sex.
It's basically a huge red flag that says "I'm a repressed homosexual who will leave you later on!"
I wouldn't care. Why would that make me angry or upset? If that's what you liked sexually then it is not my right to get offended or tell you that it's wrong. I'd still love you for being you.