You can also see with the way Josh talks about his "gay phase" that it wasn't a phase. He's going to a pride parade at 9, at 20 he's talking about liking tomboys and lesbians which is just Josh's way of saying women who look and dress like men, Finally at 25 Josh is talking about how he wants to fuck an androgynous version of himself.
It was just a phase guys. A 15 year phase. He grew out of it, get over it.