Well, being completely heterosexual, I'm sorry to say that your deduction is false. However, I like to think I am open-minded and progressive in my attitudes towards sexuality and gender. The name was something a female friend of mine called me as a joke, quite a few years ago now. It stuck since, and I use it for most profiles on t'interweb. I like the ring of it, and like how it hopefully invokes some thoughts of breaking the normal confines of socialised gender. And I enjoy mythology and fantasy-based literature and art; it appeals to that side of me as well. Comprehensive enough explanation? :)
I feel like I should say this; regarding your name, a mermaid is generally a woman and therefore with the Mr there, you are implying that you are a transvestite.
Sunset
Oh, it's cool.