Paul McCartney is ENGAGED ... Again!

5/6/2011 8:50 AM PDT

Nancy Shevell and Paul McCartney are ENGAGED

It's 2011 ... and one of the Beatles is getting married!!! Sir Paul McCartney is officially engaged to girlfriend Nancy Shevell.

According to -- the 68-year-old former Beatle popped the question to 51-year old Shevell -- a businesswoman from Jersey.

The couple has been dating since they met in the Hamptons in 2007. This will be the third marriage for McCartney and the second for Shevell.

All you need is love.