United Kingdom, June 29 -- Billy Joel was still dating Elle Macpherson when he met Christie Brinkley.

The 76-year-old singer / songwriter and model Christie, 71, went on to get married in 1985 and welcome daughter Alexa Ray Joel, in 1985 but Christie admitted there was one complication before their relationship could take off after they met in 1983.

She told Stellar Magazine: "We were at his apartment and he said, 'I'm going to call Elle because I've been out with her a couple of times and I want to let her know that now I want to be exclusive with you.'"

Billy ended things with Elle, 61, before he and Christie went on to date and tie the knot.

They were married for nine years before divorcing in 1994.

Billy and Christie have remaine...