Paul McCartney Engaged To Nancy Shevell

Beatles singer Paul McCartney is taking yet another trip down the aisle, this time marrying 51-year-old American businesswoman Nancy Shevell.

After heading out to the Costume Institute Gala at the Metropolitan Museum of Art in New York City he popped the question, nearly four years after the couple met in the Hamptons when McCartney was still married to Heather Mills.

An insider told PEOPLE on Friday:

“Nancy and Paul are getting married. Ring and all – very exciting.”

McCartney ended his six year marriage to Heather Mills in 2008, while Nancy was once married to Bruce Blakeman.

A friend of the couple tells PEOPLE:

“They have the right chemistry. They’re both cool, chilled out and optimistic. The couple have remained tight-lipped about their relationship, although in December last year it was said they were making secret preparations to marry.”

That same friend added:

“Paul and Nancy’s relationship is rock solid and there’s no mad hurry for a wedding. Neither of them want a big deal made out of it. It’s almost certainly going to be done very discreetly over in the US and Paul would ideally like to do it without any publicity beforehand.”

Good luck Paul, hopefully this one doesn’t hop off into the sunset as well.