I am 40, never had much success with relationships. I wrecked my only relationship via my autistic qualities because I was not aware of my social deficits, and how bad my sensory overload can get, among things. Things do not work with most people, they are too incompatible with my eccentricity, my long list of autistic faulty traits, my unconformity and my odd orientation. And I am usually too incompatible with their neurotypical behavior, adherence to gender and personality stereotypes and mainstream behavior, and causing sensory overload episodes with their equivalent of fun (parties and clubs are too much sensory overload, for example).
I don't seem to fit in any sexuality box. I think I am bi-ish or pan-ish (something in between them -ish) attracted, but close-ish to asexual (I dread sensory overload, bullying and abuse, getting STDs, and my libido usually does not function like it used to, and not as interested, disillusioned) and I don't trust people easily so it is hard to get anything started. These days I sometimes have mild crushes or arousals but don't pursue it for a number of reasons, mainly knowing or assuming there will be incompatibility, and realizing that it probably wont be worth the astronomical amount of effort required to pursue and maintain and not wreck. I guess I am strange because get turned on or aroused by other things than humans: weird stuff like aircraft, mechanical things and science stuff, or for no apparent reason at all.