I can relate to this other than the low libido and the masturbation only being a habit. To me I'll make a big deal out of it to work myself up to it, toys and edging included.I've brought it up before but never really explored it.
My sexuality is a lot more complex than is depicted in movies and even that which I see normal couples engage in. I have had a big issue not relating though with "normal" guys my age throughout early development. However, I have a strong fetish side to me where I'm fully immersed in BDSM and have an active lifestyle now. But for years I didn't and had a mostly sexless life. I found it a chore with my ex and I didn't enjoy it at all.
During my teens, I never understood what "the guys" meant when they said "Hot chick turned them on". Like I didn't relate to this at all. Not till I fell in love and then when I first fell in love I was physically attracted to the person I fell in love with. But I still wasn't attracted to others (still am not in a sexual way).
I know they call it demisexuality but I don't want to put a label on it, because simultaneously I've fallen in love with men and I have never been physically turned on by them, so I can't exactly call myself bisexual either (but I do tend to say I'm bisexual since I experience romantic feelings for men).
Then whenever I've not been in love, I've straight out believed I'm asexual too because I have no sexual attraction to anyone and barely have any sexual needs of any kind. I have a fairly low libido.
Biromantic, demisexual ... Probably then. Not sure if this belongs in the LGBTQ community either, but I am curious to see if there are others with a similar kind of sexuality.
The whole BDSM/fetish/kink interest I have made me completely rule asexuality out before (until someone pointed out it doesn't mean you don't enjoy sex). I'm not exactly immersed with the fetish community and despite having a long term relationship with someone who was our sex life was pretty tame with occasional sex toys (much to my disappointment). Sometimes I feel like fantasies of such things is the only thing to keep me in the mood.
I never look at someone's physicality and think "I could have a sexual/romantic relationship with that person" (Yeah, I'm sure it's a lot less crude in other people's minds like "fuck me now!" or something). The only times I have has been towards friends I have been intimately close to. So 3 times now.
My ex-partner suggested we have an open-relationship because my libido was higher than his but I just couldn't compute how that would ever happen, mostly because I didn't find other people attractive to just experiment like that, otherwise I had no issue with it on principle.