I wanna see how many of you are out there.
Honestly, I can’t see Cas as completely asexual. Demisexual, sure, because I think he needs that emotional closeness to desire someone sexually. See: Cas trying to connect with the woman he’d (well, Dean) had just bought sex from in season five.
See: Meg, to an extent, though I don’t like the ship that much.
See: that debacle with April, who turned out to be a reaper and an angel, and who was highly creepy.
See also: Nora, who he thought might want that(romance, mostly, but Cas also thinks all human romance eventually leads to sex) from him because she seemed to want to get to know him.