Harry Potter actor Rupert Grint has described kissing co-star Emma Watson in the Half-Blood Prince as a "strange" experience.
"We've known each other for 10 years so it was a bit like kissing my sister," he told the Mail on Sunday newspaper.
Rupert Grint plays Ron Weasley, who's best mates with Harry and Hermione in the films, but in the Half-Blood Prince Ron and Hermione get a lot closer.
You'll be able to see what happens when the film is released on 15 July.
Rupert and his Potter co-stars when they first got their Potter parts
Rupert Grint added: "We were determined to get it right the first time, but our first try was a disaster because we both felt so self-conscious and we couldn't stop laughing."
The 20-year-old has been a huge hit with fans in the Potter films, but it seems Rupert's not convinced about his acting abilities.
"It's always at the back of my mind that acting might come to an end for me when Harry Potter finishes," he said.
"I don't know if I'm good enough to have a long career."