The sexy BOYS singer admits her strong standing in their doomed romance stems from her inability to let other people take control of her life.
Britney - once considered as the most famous virgin in the world - has also hit out at people who deem her a "bad person" for having had sex with the CRY ME A RIVER hunk, because she only embraced intimacy in the hope the pair would ultimately marry.
She says, "I've always been a tomboy, I've always ended up being the man in the relationship.
"I know it sounds really weird, but it's very hard for me to let go and let the man take control.
"As far as the whole sex thing goes, I really did think that Justin was the one I was going to marry so I did do the thing with him after three years.
"And I don't think that's a bad thing. Just because I've admitted to having sex doesn't make me a bad person, does it?
"When you're first dating a guy, you can't really go there with him. I think it's more sacred and special if you just kiss."30/09/2003 21:11
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