Robert Pattinson once picked an argument with singer Adele about fame.

The "Twilight" star butted heads with the Grammy winner after they began chatting about the downsides to life in the spotlight, with the actor insisting he has always felt uncomfortable in public.

He tells Movieline, "I think I was pretty similar before. Like I would be one of those people who was desperate to go to a party and then they go to the party and just stand in the corner with the people they came with and refuse to acknowledge that anyone else is there. So I don't really miss anything."

"And you kind of, you have all these fantasies: 'If I wasn't famous I'd meet all these random people in the street all the time.' But you don't meet random people in the street. Most of the time you're trying to avoid everybody even if you're not famous."

The actor admits he should have kept his mouth shut when he began arguing his opinions with fellow Brit Adele.

He adds, "Actually I had this argument with Adele, which is probably the most ridiculous thing I've ever said. I was saying, 'You know, you can really just like reach for it,' and she was like, 'You do realize I am like the biggest-selling female artist ever?' And I just for some reason just decided to get into an argument with her. Then (I found myself) waking up and kind of really, really regretting every word I said."