Billy and Katie got married October 2, 2004. In June 2009, they confirmed that they had split.

Billy and Christie got married on a yacht on the Hudson River. They have a daughter together.

The two met on the island of St. Barts, and were wed on March 23, 1985 on a private yacht.

Billy and Elle dated in the early 1980s. Billy said that his songs "This Night" and "And So It Goes" were written...