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From all outward appearances, Taylor Swift and Harry Styles of One Direction are dating. The two have been seen numerous times holding hands and they've also, according to People magazine, been spotted kissing.

How long will this romance last? It's hard to say because Swift admits in a new interview that she has no idea how to keep one going.

In an interview with the British edition of Cosmopolitan magazine, Taylor, 22, is asked what she still doesn't understand about relationships.

"How to make them last," she replied. "I've never had a really long relationship, so I have no idea what that's like. Wish me luck for the future."

Perhaps the future is here. Although Styles is four years younger than Swift, she tells Cosmo U.K. that age is never an issue for her.

"I really don't have any rules about dating when it comes to height, age, career choice, anything like that. It doesn't matter," Swift said. "It's really more about strength of character. When it comes to age, I've been all over the map."

Styles told the same magazine last month that he "finds ambition really attractive … if someone's good at something they love doing. I want someone who is driven."

The two have yet to confirm their relationship, and their friends are clamming up as well. Asked what he thinks about Swift and Styles' dating, Ed Sheeran, who's friendly with both of them, feigned ignorance, telling reporters Friday night, "I don't know what you're talking about."

As for Styles' band mate Louis Tomlinson, he also wouldn't confirm the relationship.

"Well, I don't think they're talking about whatever's happened between them now," he said.

He would only say that he was happy that they're "good friends," adding that he thinks Taylor's a "lovely girl."

As for Sheeran, he did go so far as to say why he thinks any guy would be lucky to date Swift.

"She's a very warm, loving person and I think she kind of spreads that around to her fans and family and friends," he said. "And I think if a guy pinned her down, they'd be happy with that."