The Danish beauty has been linked to a number of men since she catapulted to fame in the 1990s, but she insists most of the romance reports are completely false.
And Christensen is adamant the speculation can be hurtful when she is rumoured to have stepped out with her close pals' boyfriends.
She tells Britain's InStyle magazine, "I only really get annoyed by it in moments when I feel kind of down and vulnerable. But I do get bothered by the fact that I'm linked to all these man I haven't even met.
"Some were my girlfriends' boyfriends and (the press would) cut her out of the picture and then it would be me dating them. Billy Corgan was one of those situations - my girlfriend dated him for five years. Josh Hartnett, we're like brother and sister. The thought of us being together makes us crack up. Heath Ledger I barely even knew that well by the time of his death and suddenly I had dated him?"
Christensen, who has dated INXS rocker Michael Hutchence and Interpol star Paul Banks, now avoids reading about herself.
She adds, "I don't do it any more, but if you read anything about yourself, it really messes with you. If you realise that people are looking upon you as like, 'Oh, she had all of them, man. She slept with all these musicians and actors.' Not so much for me, but my family, my kid."