"Diamonds Are for Heather" is the second Christmas special episode of the BBC sitcom Only Fools and Horses.
On a November evening at The Nag's Head, Del Boy is feeling miserable due to his loneliness and lack of a family.
When he arrives at her flat, Del discovers that Heather has a son named Darren, aged three and a half, and a husband named Vic, who has not returned since joining a very long queue at the Job Centre 18 months earlier.
However, at a candle-lit curry dinner, Heather refuses Del's proposal, because her husband Vic wrote to her one-week earlier and is now living in Southampton, working as a department store Father Christmas.
Heather then says goodbye to Del, who manages to cheer himself up by paying some carol singers to sing "Old Shep".