Although Nancy Shevell (an American heiress) is financially independent, I bet he'll have a prenup this time.  Rumours are that he has sought out the approval of their families for the marriage.  According to a source:

"Paul's utterly enchanted with Nancy and he's already rolling the idea of marriage around in his head. He adores everything about her. He thinks she's 'The One' and told (his daughter) Stella as much.

Shevell, 47 is in the process of finalizing her divorce to U.S. lawyer Bruce Blakeman.  McCartney and Shevell have been dating (it is believed) since October, 2007 and are inseperable.  Friends say it is the happiest they have seen him in years.

I hope he finds the love and happiness he deserves and is looking for.

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