I hate that idiot golddigger. I also feel terrible for Sir Paul because he likely married her in grief after losing his true love, she just wanted to take him for all he's worth.
Here's one for ya... Bill Wyman, ex bass player for the Rolling Stones:
At age 47, Bill Wyman began a relationship with 13-year old Mandy Smith, with her mother's blessing. Six years later, they were married, but the marriage only lasted a year. Not long after, Bill's 30-year-old son Stephen married Mandy's mother, age 46. That made Stephen a stepfather to his former stepmother. (If Bill and Mandy had remained married, Stephen would have been his father's father-in-law and his own grandfather.)