The mum-of-five, 53, who'd met 'John Wilmotts' on the dating website Plenty of Fish in 2015, was roped into a web of lies, greed and deceit during the elaborate scam – which left her feeling suicidal.
Over a period of 19 months, Lynn, from Chester, was tricked into handing over vast sums of cash – which plunged her into debt and caused a rift within her family.
As the magnitude of the scam dawned on her, her despair turned to fury and she set about getting revenge, teaming up with police to nab the con artist and his cronies.
But while one of his accomplices was jailed, two remain at large.
Lynn's story features in Love Rats, a Paramount+ documentary about women who have been betrayed by their loved ones.
Speaking exclusively to The Sun, Lynn says: "When I finally found out, I felt anger, humiliation, and sadness.
"I just felt like such a fool. An absolute idiot. I felt like I couldn't tell anyone what had happened because it was so embarrassing."
Lynn was reluctant to join a dating site at first, having not long left a toxic relationship.
She married early at the age of 16 but divorced after six years and three children.