I’ve been come on to by a lesbian only once. Sad. :( She sat down next to me in Vegas, flirtily chatted for a bit, and invited me to an Ani DiFranco show (for reals) later that night. I said no thanks, then casually mentioned something about my boyfriend… pretty much exactly what I’d do if a nice but unappealing guy came on to me. No need to treat the situation any differently.