https://www.tumblr.com/horizon-verizon/765795658477207552/what-makes-cristons-behavior-unsettling-is-the?source=share I could be mistaken, but in one scene where they pan through Aegon’s bedroom, there seem to be some BDSM gear-like and dildos on the table. This detail hints that Aegon might be open to both genders? which makes Criston’s hatred toward Laenor for his sexuality feel even more hypocritical.
I mean...maybe I'm being too ugh when I say this, but just because there's a dildo in this straight-led man's room, doesn't mean he's queer or questioning. the dildo could be for any woman he grabs consensually or wit money, to assault women with, or a way to piss off his parent for attention. From what I've heard, some st-men just want to direct other men's pain/pleasure to feel in control, even direct a 3rd party for that.
He seems like a dude who'd not experiment for fear of losing his masculinity card because he already feels so inadequate.