Beatles legend Paul McCartney and his girlfriend of four years, Nancy Shevell, are engaged to be married, sources tell PEOPLE. McCartney's publicist, Stuart Bell, later confirmed the news but would not comment.
"Nancy and Paul are getting married," a source close to Shevell, 51, a New York businesswoman, tells PEOPLE. "Ring and all -- very exciting."
McCartney, 68, started dating Shevell during the summer of 2007, and despite their 17-year age difference, a source close to the couple told PEOPLE they were a perfect pair.
"They have the right chemistry," the source said. "They're both cool, chilled out and optimistic."
McCartney's previous marriage to Heather Mills ended in divorce after 4 years and resulted in a reported $48 million settlement. His first wife, Linda, died of cancer in 1998 after 29 years of marriage.
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