Erik Heinila/ Hallmark
Betty White and Jennifer Love Hewitt search for a long-lost love in the Hallmark Hall of Fame presentation "The Lost Valentine" -- and ET is first to take you behind the scenes.
In the drama, Betty plays Caroline, a World War II widow, who lost her husband when his plane was shot down over the Pacific and he is reported MIA. Caroline has never had any final notification that her husband is dead, so each Valentine's Day, she returns to Union Station -- the last place she saw him -- to salute his memory on what is also their wedding anniversary.
"People ask me, 'What would you like to do that you haven't done, and in my mind it's always a Hallmark Hall of Fame movie," Betty tells ET.
This particular film was of interest to her because of the lost-love angle. Betty was married to Allen Ludden from 1963 until his death in 1981, and she has never remarried. So she understands her character.
"If you've had a big love in your life like I had with my beloved Allen Ludden … Oh, he's right here," she says, indicating her heart.
Jennifer plays Susan, a TV reporter reluctantly assigned to do a human interest story on Caroline, but things change and she gets into the assignment, trying to discover what really happened to the downed Navy pilot and possibly making a love connection of her own with Caroline's grandson.
"She ultimately helps Betty get her final goodbye and complete her love story," the former "Ghost Whisperer" star tells ET.
The two women hit it off instantly, according to Betty, who says, "We were old friends the minute we were introduced. We've been teasing each other a lot, but she's a joy to work with."
And Jennifer comments, "Betty White, Valentine's Day, love story … you don't really need anything else. For me she's always been the IT girl. I grew up watching 'The Golden Girls' with my grandmother and we loved that show."
The 241st Hallmark Hall of Fame presentation, "The Lost Valentine," airs Sunday, Jan. 30 at 9 p.m. on CBS.