Guy I'm dating only watches straight porn

So this guy I've been dating since the 12th of January, we've been on 5-6ish dates and it's been magical. We've really connected to one another, and very sexual too. I don't doubt that he finds me attractive as he'd been fully hard every time even just from kissing.

He identifies as gay, but has been a tough road. he's had sex with 8 girls and said it took a lot of "effort", and whenever he was drunk he would realise that he liked men, he fully called himself gay around about 18-19, occasionally calling himself bi but then other times gay.

Just out of interest this evening when we were fumbling about before work I asked him if he watched gay porn and he said no, that he tried and didn't like it, only gets off to straight porn but only watches it like once every two weeks or so.

He's very obviously romantically and sexually attracted to me, so I guess I just found it strange. I didn't say anything. I'm the first guy he's ever went beyond kissing with.

Im quite an anxious person, and I'm 19 and he's 20, I want to make him my boyfriend one day, which I am still on the path of doing. But this one thing does confuse me a bit.

Is he maybe just still figuring out his sexuality? I guess a part of me fears that he'll realise soon enough that he isn't gay and just likes girls. I know that's probably irrational so i guess I'm calling older and/or wiser gays to snap me out of it lol