It was a decision that would prove fatal.
Their brief encounter turned violent with cowardly Chen strangling Tracey, leaving her three-year-old daughter Megan without a mother.
There were no witnesses that November night in Glasgow in 1997 to the brutal attack. No one saw Chen arrive at or leave Tracey's home.
Neighbours had heard arguing from the flat in the early hours of November 24, then the sound of a door slamming and keys being rattled.
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Detectives discovered that on the previous night, November 23, Tracey had gone into Glasgow city centre.
She was last seen on CCTV in Wellington Street around 3.20am with a mystery man who appeared to have an arm around her shoulder.