The notion of solosexuality is one that is discussed on blogs and polls and forums on the site. It’s as if a variant of gay sexuality has come to light – gay men who get off on men (though straight men populate the site too), but prefer to get off alone, using porn, poppers and whatever other accoutrements they like (or conversely, use tantric practices to heighten the experience). Like in any community that tries to define itself, there is contention about what a true “solosexual” is. Is it someone who never ever has sex with others? Can you define yourself as solosexual if bating is your true sexual passion, though you do bate with others or, furthermore, engage in penetrative sex sometimes too?
Source: Hunting for Sex: Cautionary Tales from the Quest: Solosexuality