Tommy (Chris Fountain) is left stunned when he overhears Kirsty (Natalie Gumede) making secret plans to meet up with a mystery man over the phone, and immediately jumps to the conclusion that she must be cheating on Tyrone (Alan Halsall).
When Tommy tells Tina what's going on, she urges him to get to the bottom of the matter by following Kirsty. Although reluctant, Tommy goes ahead with the idea and tails Kirsty until she arrives at a bar.
Tommy then witnesses Kirsty affectionately greeting the mystery guy and is horrified. In reality, Tommy has misinterpreted the situation - but what will the consequences be when he tells Tyrone?
Coronation Street airs tonight at 7.30pm and 8.30pm on ITV1.
> Coronation Street's Alan Halsall chats to Digital Spy about the storyline
> Read our full spoiler for tonight's first Coronation Street episode
> Read our full spoiler for tonight's second Coronation Street episode
> Read more Coronation Street spoilers and news