Tina McIntyre (Keegan) has begun a relationship with Tommy Duckworth (Chris Fountain) after a year of 'will-they, won't-they', but the actress suggests that the couple will not have an easy path.
"I think there will be a bit of drama," she told What's On TV. "He better not cheat on Tina though, because she will come down on him like a ton of bricks.
"They've taken a year to get together so I do want them to be happy for a while."
Keegan, who recently won the 'Sexiest Female' award at the British Soap Awards for the fourth year running, went on to deny that she considers herself sexy.
"I'm the least sexy person I know," she insisted.
"I go out in my pyjamas, tracksuit bottoms, and never go into work with make-up on. But I like the fact that people vote for me, and I also think it's nice that people can relate to Tina and she's quite plain."
Keegan revealed this week that a recent fight scene on the show left her covered in bruises.