The 61-year-old Rolling Stones guitarist – who sparked huge controversy last year after leaving his wife of 23 years to be with Ekaterina Ivanova – has told friends he has found "a new lease of life" since dating the Russian waitress.
Before he can marry Ekaterina, Ronnie must divorce estranged wife Jo and he is determined to protect his $87.5 million fortune.
A friend of Jo's said: "She is devastated and now knows there is no turning back in their marriage." "Ronnie wants the divorce to be over as soon as possible so he can marry Kat."
"Jo always believed this was just a silly fling that would soon blow over. She worked really hard to remain on good terms with Ronnie. But instead of sorting things out he wants to fight out any claims in court."
Ekaterina recently insisted she was with Ronnie because she loves him and not for his money.
She said: "He makes me happy, he's funny. There's a warmth when we're together. We're like Lego that just clicks together."
"The money thing is ridiculous. I'd have to be a really sick and twisted person to go through what I went through for money - money that I obviously haven't got."
"I'm not materialistic. I find it quite fun not to have money."
