Regardless of the name on the filing drawer, you shouldn't have much trouble. I tend to trip over couples looking for a third pretty much everywhere I go with about a 60/40 female/male target market.
I am as direct as a T-Rex with 'roid rage and about as subtle. It isn't intended to cause upset, I just prefer to talk plain. There are plenty of other people here who do the nice, polite thing much better than I can. I'm what you'd call a "problem dinner guest."