Sorry, can't really remember because I have had so many names.
I stared with Helen but decided I didn't really like that, then Marianne after an ex-GF but after we broke up I couldn't keep that one, then Monique because it suited a photo I used as my profile picture (it sort of suited the pic) for an investigative site I belonged to, now I am Melissa (why I am not sure) as I had to decide on a name when I was joining another TG site.
It sort of sounded cute and girlie and had no male equivalent. Melissa is of Greek origin, and the meaning of Melissa is "bee; honey". Maybe that is why I chose it, although I just googled for the meaning.
I hate it when people call me Mel, maybe I will have to choose a name that can't be shortened.