Personally, that'd bother me I think. I have zero problems with my boyfriend ****ing over porn - it's totally normal and if he said he didn't I'd laugh at him and tell him he doesn't have to lie! Doesn't get to me in the slightest, nor would it with any celebrities. But if he was ****ing over one of our friends/girls we know in real life? I wouldn't feel comfortable with that at all.
Edit: Whoever negged me for this mind saying why? I never said I'd break up with him, just it isn't a very nice thought is it?