Despite taking precautions, the boybander says his first sexual experience left him worried he'd got the girl pregnant.
"The first time I had sex, I was scared I got the girl pregnant," he told OK! magazine.
"I would never risk not wearing a condom, it’s too much of a risk. If you’re not ready for a child, then don’t risk it."
Wise words, Harry.
Meanwhile, Harry has touched down in the US with his One Direction bandmates ahead of their latest round of promotion duties.
Harry, Liam, Louis, Zayn and Niall were snapped at LAX looking a little weary after their flight from London but still managed to raise a few smiles for the paps and fans who had greeted them at the airport.
Well, apart from Zayn Malik who went all camera shy as he kept his head down under his hood.
Hmmm, maybe he was having a bad hair day.