The wife of Irish rock legend Bono always feared his band's success would split up their marriage.

The U2 frontman met his future spouse ALI HEWSON when he was just 13, but when the Beautiful Day hitmakers were propelled to stardom she worried that it could spell the end of their relationship.

But the 44-year-old mother reveals, "We were lucky. We just held on."

Hewson believes the period taught her a lot about what makes a successful marriage: "It's about survival.

"It's to do with realising that you can't own somebody - you can just share the crazy experience with them. It seems to have worked."