In an interview with Cosmopolitan UK, the 19-year-old said 28-year-old Katy is “the sexiest woman I’ve ever kissed.”

They shared the impromptu moment at the show when Katy kissed Horan right on the lips as he took the stage with his mates to accept the award for Best Pop Video.

Afterwards, Horan tweeted: “@katyperry looks like its official…me and you.”

Perry joked back and wrote: “I’ll be your Mrs. Robinson.”—referring to the ’60s movie “The Graduate”, where a young man is seduced by an older woman.

Horan wasn’t kidding around about the kiss being memorable.

He told Cosmo: “It was amazing and very purple–she had purple lipstick on. I don’t think there will ever be anything cooler than kissing her…until I marry her, maybe.”

SOURCE Yahoo Music