In late July this year, Jim Wirth was sweeping the area of Cape Cod with a metal detector when he came across a gold ring. "When I first got it out of the sand and rocks, it was very dark in colour and had a green crust," says Mr Wirth to NDTV.
He got it home, cleaned it up and discovered that it was a 1969 college ring from Manhattan College.
"It had a full name inside, Patrick F. O'Hagan," says Mr Wirth.
"I knew I had the right person," says Mr Wirth when he came across a chapter in the memoir where Christine talks about falling in love with Patrick O'Hagan at Manhattan College.
"Oh my God. Oh my God you're kidding, that's what I said to him," says Ms O'Hagan, according to the NBC. "I always looked for it, it was like a piece of our early years."
The ring, cleaned up, was returned to the couple just a few days later.
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.