I might be a bit concerned .... another man could stimulate his ass a lot more than I can. What if he liked and soon wanted to upgrade from toy to real phallus? I'd be up a creek.
Why? Why would you be upset with a partner who wanted to explore the various forms of sexual expression? Doesn't sound to me like you're an encouraging partner to be with considering that attitude...
What someone does with their own body which doesn't directly affect anyone else shouldn't be a concern to others
Well, recently I disclosed to my girlfriend in front of 5 or 6 friends during a drunken game of never have I ever that I've used anal beads during sex before, and she gave me a weird fucking look. (She's a pretty old school girl when it comes to sex) and I felt kinda silly but i know she wouldn't feel intimidated or freaked out. Guess it depends on your girl/boyfriend.
lol i wouldnt be surprised, and i wouldnt actually care long as he wasnt trying to make me do anything with mine i dont like idea of anal on me, but if he wanted id use strap on on him, its his body