"It's 50 Shades of Molly," Billy, who plays Mike, tells ET. "She goes away to find out what she wants to write and comes back with this crazy, erotic tale, and they buy it. Now she has to figure out how to write the whole book."
In real life, Melissa has been getting sexier as well. She recently lost an estimated 40 to 50 pounds.
"We're both just chipping away at our health," said Billy. "We do the best we can and we root each other on."
Another woman that's always been in Billy's corner is his wife Patty.