Kelly BrookKelly BrookThere are some things that are probably best to keep on the down low.

And somebody really should have let Kelly Brooke know this was one of them...

She blurted out how her boyf Billy Zane believes they have met in a past life.

The twosome have been out promoting their new flick Fishtales, telling how working together has made them closer and they were fated to meet one another.

Billy told The Sun: "It's ironic that we're dealing with mythology and the ethereal realm in this movie.

"It's a sense of reunion - whether it was past life or anything like that.

"There are no coincidences in life. What is it? You can travel oceans of time!"

Kelly Brooke and Billy ZaneKelly and Billy ZaneKelly added: "He thinks he met me in a past life. That's because I'm so friendly.

"I'm like 'Oh hello!' and he's like, 'I must know you from somewhere. You're so forward!'"