Jenny Connor’s fury at Liz McDonald is set to end in "very tense" scenes on Coronation Street.
The troubled pub landlady, played by Sally Ann Matthews, will use booze to cope with her fury at love rival Liz.
However this is set to have disastrous consequences on Christmas Day as her jealousy gets the better of her.
After Johnny compliments Liz it is the final straw for Jenny, who becomes embroiled in a furious row with her husband.
Jenny ends up spilling the truth – that she has been tracking him and Liz on her phone.
The row then escalates and Jenny storms off, grabbing a bottle of wine on her way out. In a desperate bid to save his marriage, Johnny in turn sacks Liz to save his marriage.
- Coronation Street’s Peter Barlow and Carla Connor ‘to reunite’ in sexually-charged New Year’s Eve
Liz heads out fuming and Jenny later returns back home completely hungover.
"She is unhinged, let’s be honest," actress Sally explains.
"You never know if she’s going to… when it came out that they’d had an affair, you would have expected Jenny to have just gone into a big old catfight and there’s no way she would have forgiven Johnny and there’s no way she would have behaved in the way that she did, so that was nice to see she’s not predictable."
Asked whether viewers would see a massive showdown between the love rivals, she said: "I think you’ve seen Jenny and Liz are more verbals. They’re both smart, sassy women, they’re matched in that way. So it’s always going to be a war of words between Jenny and Liz."
Jenny added cryptically: "It’s very tense, very very tense and there might be a reversal of the situation after Christmas."
Corrie airs Mondays, Wednesdays and Fridays at 7.30pm and 8.30pm on ITV.
Showbiz and TV editor’s picks
Becks hugs baby niece
Kym Marsh reveals sex of grandchild
Holly’s shock This Morning announcement
Emily vs kate round 2