first time I fucked a guys ass, I knew I liked it too much and was for sure bi, then sometime later, the first time a guy slid his cock into me, I loved it so much I knew I was gay, a faggot, a homo and I was just fine with that.
When the young guy fucking you tells you that your ass is as nice as any girl's ass is, it is hard to end it without letting him unload in that ass of yours that he finds so attractive.