When I came out to my grandmother as bisexual, she was immediately supportive, asking me if I was dating an out lesbian friend of mine (I wished!) and otherwise leaving it be. Years later, she called me crying about the end of a secret decades-long lesbian relationship with her best friend because she had no one else in the family to talk to. I’m happily married to a man today, but I’m still out because the chance to be supportive is never irrelevant.