Robert Pattinson is like younger bro for Katy Perry!

Washington: Katy Perry has denied rumors of a romantic `link-up` with Robert Pattinson and said that they are nothing more than just friends.

The `Part of Me` singer told Elle UK that she feels like Pattinson`s big sister and is even comfortable farting in front of him, which proves that she isn`t dating him, as the singer doesn`t fart in front of her dates, Us Magazine reported.

Perry also added that she had texted the `Twilight` star saying that she is proud of the fact that they have never slept together.

The 28-year-old singer claims that her relationship with the 27-year-old actor is more familial than romantic.