I'm still pretty brassed off that someone let on that I'm A Questionable Gentleman on AAAC. I thought I'd chosen a fool-proof disguise.
People who like clothes and wear them well have strong, distinct personalities. These will always show through no matter what user name is being used I really don't mind others doing some username rotation from time to time. It only adds to the fun.
I think it was just the disgust & horror of realising that they'd been talking to me for years & hadn't known it.
Be honest - You'd feel sick too.