Responding to rumors that he's actually dating his friend, British DJ Nick Grimshaw, the 19-year-old singer insisted to British GQ that they are just friends.
"Bisexual? Me? I don't think so. I'm pretty sure I'm not," Styles told the magazine.
Styles and his fellow bandmates from the popular British boy band each grace different covers of the magazine's September issue.
Inside, Styles comments on the non-stop rumors about his love life.
"Some of them are funny. Some of them are ridiculous. Some of them are annoying," said the floppy-haired singer who once dated Taylor Swift.
"The only time it gets really annoying," Styles said, "is that if you get into a relationship and you get into a place where you really like someone and then things are being written in the papers that affect them and how they see you."
That goes for the other guys as well - a couple of whom are in relationships. Contrary to public opinion, they told the magazine, their downtime on the road isn't a non-stop groupie fest.
"The type of girls that would sleep with you in a heartbeat aren't the type of girls I'd want to take home, anyway," Louis Tomlinson said.
"We go back on the road straight after a show and we're gone," added Niall Horan. "I wish we did have time for girls and parties, but we don't."
Liam Payne chimed in, "We don't have time to party! I'm not even single. This sort of talk will get me in trouble."
He added, "Maybe we need someone to schedule that in for us."
Though the guys adhered to their squeaky clean image in the story, some fans didn't take kindly to GQ's cover headlines, including Styles' "He's Up All Night to Get Lucky."
Fans bombarded GQ's website and Twitter with comments like, "Harry is not a SLUT, Louis is not an ***HOLE, Zayn is not VAIN LIKE THAT … WHAT THAT H*** IS WRONG WITH THIS MAGAZINE."
British GQ compiled the "most terrifying" comments of the bunch, which "frankly had us fearing for our lives."