Emma Watson loves her Harry Potter co-stars like brothers. And that makes kissing them for the cameras all the more awkward.

Appearing on the UK talk show Friday Night With Jonathan Ross, 19-year-old Watson revealed that kissing co-star Rupert Grint for the 7th Harry Potter film “was the most horrible thing I’ve ever had to do…it just felt like incest. That’s the only way I can describe it.”

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Keeping things professional, Watson said, in the end, she and Grint were able to get the job done.

“It was fine that I was actually kissing him because I had my eyes closed so I could not think about the fact that it was him. The worst bit is when we had to open our eyes and look at each other because then I was just like, [laughter] and then we couldn’t keep going. But we did it in the end. Six takes — not bad. It could be worse.”

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