Phil and Orianne married in her native country in 1999 but split in 2006 and divorced two years later.
Despite their previous split, the beauty insisted she is meant to be with the Genesis rocker - who is also a father to actress Joely, 43, musician Simon, 39, and model Lily, 26.
During an interview with the couple, she told People: "We are back together, we are very happy and time will tell as far as the future - who knows?"
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And Phil gushed: "Yes we are back together. It wasn't something wewanted to make a song a dance about. But obviously when you have children, there's two ways you can go. You can go the nasty way or you can go the nice way, and we always went the nice way ... and we realised we missed each other."
Phil was married to first wife Andrea Bertorelli from 1975 to 1980, and second wife Jill Tavelman from 1984 to 1996.
- Bang! Showbiz