Joel may or may not be gay but he didn't say he thought being hikiaexual was unnatural. He asked Aaron how he would feel if somebody said that to him. He actually said his opinion was that people were born that way. Aaron said if somebody thought that, he'd be fine with it as far as I remember.
I like Joel, I think he's genuinely interested about things and will make an interesting housemate given a bit more time and confidence. He's still finding his place.