The Hangover star, who has been dating actress Renee Zellweger for several months, has insisted that he was amazed at what was written in the tabloids about him and actor friend Victor Garber after attending an event together.
Speaking to The Independent, the 34-year-old said: "People thought we were dating. It was all over the internet. It was the first time I read a rumour like that about me, and I just thought it was fantastic."
Cooper also admitted that he never fit into any specific high school clique while growing up.
He added: "I wasn't the smartest person in school, I wasn't the coolest kid. I really didn't have anything going on.
"I was fascinated by those sports jocks because they were so obviously a**eholes and didn't hide that fact. But they somehow had this power, that the rules of the universe didn't apply to them."