Ananova:

We're hearing noise on the Kelly Brook - Billy Zane relationship front.

Chit-chat of a break-up is doing the rounds.

But could one of showbiz's strongest couples really be on the rocks?

Rumours of a split were sparked when Kelly attended the TV Baftas earlier this week minus her engagement ring (see left).

Now The Sun are reporting that Kelly and Billy have headed to Splitsville for good.

A source told the newspaper: "After much soul-searching, Kelly decided that Billy is not the man she wants to marry and has called off the engagement.

"The split is completely amicable and the decision was made after long conversations here and in the US. They remain good friends."

They claim the break-up was apparently brought on by Kelly's refusal to set a date for their wedding.

"Billy was keen but she kept delaying plans for the big day. He started asking questions - and they eventually decided to go their separate ways," the source continued.

Kelly met Billy while filming thriller flick Three in 2004. The twosome have dated for four years, and are often snapped out and about together, happily laughing in one another's arms.

Could it really be that these two lovers are breaking up, or is it just rumours gone crazy?

Showbiz Sherlock is on the case and we'll keep you posted.