London, July 5 : Sandra Bullock says that her nude scene with Hollywood pal Ryan Reynolds in `The Proposal' could destroy their close friendship.

The two of them have known each other for nine years, and even enjoyed holidays together with Bullock''s husband Jesse James and the `Wolverine' star''s wife Scarlett Johansson.

And the `Speed' star's friendship with Reynolds was put to test when they had to bare all in a sex scene for their new movie.

While the filming for the scene lasted three days, Bullock has claimed that working together with such a close friend helped her make it more convincing.

"You know, when I read it, it read hilariously... we knew we had to be true to it, we didn''t pretend to shoot naked because, like, when you see someone get out of a bed with a sheet... you go ''it''s a sheet!'' So we knew that in order for it to be truly funny we had to do it naked and it was three days of stunts - it was virtually naked stunt work," the Daily Express quoted her as saying.

She added: "But I did it with a friend and he was very protective over me, and I of him, and thankfully our friendship left stronger and not destroyed... as it could have been." (ANI)