Chesney (Sam Aston) discovers his partner's betrayal when he spots Katy, Ryan and Gary Windass all clashing over the situation in a public row on the cobbles.
Back at the house, a devastated Chesney demands answers from Katy (Georgia May Foote), but she makes things worse by explaining that she feels trapped by her 'dull' home life and just wanted some excitement.
Although Katy is keen to make things work, Chesney can't even bear to look at her and orders her to leave. Are Chesney and Katy splitting for good?
Coronation Street airs tonight at 7.30pm and 8.30pm on ITV.
> 'Coronation Street' star Sam Aston chats to Digital Spy about the storyline
> Read our spoiler for tonight's first 'Coronation Street' episode
> Read our spoiler for tonight's second 'Coronation Street' episode
> Read more 'Coronation Street' spoilers and news
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