What happened between the famous British heartthrob and the superstar singer?

Well, Rob wanted to give Adele some advice about being famous:

"I was saying, 'You know, you can really just like reach for it (her goals)', and she was like, 'You do realise I am like the biggest-selling female artist ever?'"

With this answer, Rob was a little taken aback at Adele’s abruptness. His pride was also a little wounded, so what did Robert do next?

“And I just for some reason just decided to get into an argument with her. [I woke up the next morning] kind of really, really regretting every word I said.”

Bad idea, Pattinson! Ouch! 

Source: Sugarscape