Pamela Anderson only truly knows if a boyfriend loves her when she breaks up with them.

The former Baywatch babe, who is currently single after dating actor Stephen Dorff and rocker Kid Rock, admits she keeps nasty emails sent by ex-boyfriends to remind her that the men in her life can often make her think they love her when they don't.

She explains, "You think you know somebody, you go out and then you break up with them. That's when you really get to know that person and see their true colours.

"If a past boyfriend can genuinely wish me well after a relationship ended, then I know that he truly cared for me.

"It's the ones who send you nasty emails telling you how horrible you were after the fact who probably never really cared in the first place."