Personally I think Harry is (mostly) straight tbh. I mean, I don't know if he experimented or if he's one of these guys that want to fuck everyone and everything when they are high. Maybe he's bisexual, but heteroromantic...

He did an interview with GQ in 2013 where he was asked by the interviewer about his friendship with Nick Grimshaw and if he was bisexual and he said he was not:

[quote]GQ: What do you make of the rumours about you and Nick Grimshaw? Harry: What rumours would they be? GQ: That you're an item. Harry: Oh, really? I didn't even know. We're not dating, no. We're just friends. GQ: So you're not bisexual? Harry: Bisexual? Me? I don't think so. I'm pretty sure I'm not.

So either he was lying or he isn't. In 2015 he was asked again about his sexuality by The Sun and basically told them to fuck off lol. They talked about sexuality in pop and Miley Cyrus coming out as pansexual.

[quote]“It’s weird for me - everyone should just be who they want to be. It’s tough to justify somebody having to answer to someone else about stuff like that.” So has Harry personally labelled his sexuality? He replies: “No, I’ve never felt the need to really. No.” Would he like to elaborate? “I don’t feel like it’s something I’ve ever felt like I have to explain about myself.”

At the time of the interview he was reportedly dating Tess Ward, a no name chef and food blooger and they never confirmed it officially. I guess if it was a beard, his management would have organised someone more high-profile. He's a very famous pop singer, I'm sure another famous singer or actress would have agreed. Also for bearding a few pap strolls and some PDA are usually helpful and nothing like that happened.

Speaking of paps, he's also pretty much followed by paps and fans everywhere and they share everything on social media. If you want to, you can basically find out where he and with whom he is at nearly all times. So if he's ever been in a relationship with a man, he's extremly good at hiding it and never ever engaged in PDA with him.

Some of the gays from Queer Eye partied with him recently in Japan and Kamaro Brown talked about it in an interview and called him "this straight guy" (it was a story about showing him Grindr, that's why it was even mentioned). So either he's straight or Kamaro just doesn't know better or he's part of the big bad closet conspiracy.

Also while I believe that coming out as anything other than straight would have been discouraged by One Direction's management team, I don't think he'd hide anymore these days. He's been solo now for 3 years, his manager is a good friend, his music and acting career is fine, he's a multimillionaire and doesn't depend on his record sales and I'd think Gucci would love to have a famous queer testimonial. In fact, since he's known for wearing over the top camp fashion like his idols Mick Jagger, David Bowie or Prince, is an open advocate for the LGBT+ community and can be seen waving pride flags, that his fans bring to the concerts, around on stage, I really believe he would be out by now, especially since times have changed a bit in pop and most of his fans seem to think (and love that) he's gay or bi anyway. I'd even go as far and say that coming out as boringly straight would be more of a PR problem for him these days.