The actor admitted in a new interview: "I was writing poetry consistently when I was 16 to 19 or 20. In that period I would have written a lot of love poems."
But he added: "I have none that I want to see in print on the Internet forever!"
Daniel Radcliffe in 2014
Speaking to Elle magazine, the 25-year-old also talked marriage and said: "It seems like the most romantic thing you can do is stand up in front of all your friends and say that you love this person..."
He later added: "At the same time, the amount of stress that goes with a wedding... I don’t know."
Daniel met his current girlfriend Erin Darke in 2012 on the set of Kill Your Darlings but told the magazine that he received his best piece of advice from Imelda Staunton oin the set of Harry Potter: "I had a girlfriend, and we’d said, 'Oh, we’ll not do Valentine’s Day. Don’t do any of that.' I was relaying that to Imelda, and she told me that no matter what any girl says, 'just do something'."
Daniel Radcliffe and his girlfriend Erin Darke
He also added that his parents are an inspiration for him when it does come to thinking about marriage.
"I think my mom and dad have an incredibly equal marriage.
"Sometimes, when I watch American dating TV shows, like The Millionaire Matchmaker... I know the men on there get told nothing but wonderful things about themselves all the time but I watch them, and I’m like, 'How are you speaking to a woman like this?!'"
Daniel Radcliffe and his What If? co-star Zoe Kazan
Daniel found fame at the age of 10 when he was cast as the titular character in the Harry Potter franchise. He recently addressed the possibility of returning to the big screen as the spectacle-wearing character when author J.K Rowling shared a short, spin-off story on the Pottermore website.
"My inclination is to say 'no' because I don't think it's even a hypothetical at the moment," he said via satellite link at the Television Critics Association's Summer Press Tour.
What If? is out in cinemas on 20 August.