I feel like most guys are sexually opportunistic, flexible, sailors and jailed guys, any port in a storm, right?
But since you have a gem of an open minded wife, would say you are at least bicurious. If you enjoy it and it feels like sex, not performance, then I would say bi. Not before.
Not just acceptable, but seen as normal. I have had guys want to insist I was bi because I run hot, and kind of freaky - like they knew and I just had not realized. Um, no.