Blake Lively has only ever had "four boyfriends" and has never been on a real date.

The Gossip Girl star romanced her onscreen love interest Penn Badgley for three years before they split in 2010, and she went on to strike up a romance with Hollywood actor Leonardo DiCaprio.

Lively, who is now involved with her Green Lantern co-star Ryan Reynolds, has admitted she is not a fan of casual dating and wouldn't sleep with a man outside of a relationship.

She tells Elle magazine, "I've had four boyfriends in my whole life. I've never been with anyone that's not a boyfriend. I didn't have a boyfriend until I was 17... I've never gone on a date. Maybe I'm too shy. If I've ever had a man in my life, it's because I know him well, and he really means something to me. I don't take that stuff lightly."

"I'd rather be by myself than be spending any time or energy on somebody that I didn't feel sure about."

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