The actress, who plays Sunita Alahan in the ITV1 serial drama, will be seen cheating on Dev (Jimmi Harkishin), starting an affair with pub landlord Karl in scenes to be aired later this week.
> 'Coronation Street' John Michie interview: 'Sunita intrigues Karl'
Gulati said in a video posted on the official Coronation Street website: "I think Sunita's got a little bit of a soft spot for Karl, that gambling man, yeah. You know, somebody said to me the other day in the supermarket [that] he was a gambler and I should be very careful, because he'd seen me flirting with him.
"I wasn't aware that I was actually flirting with John. Maybe that's just a natural vibe!"
Gulati also confirmed that sparks fly following Sunita's forthcoming arrest for drunk and disorderly behaviour, explaining that Karl comes to collect her "after she's arrested and she's looking really miserable".
"[It's] definitely interesting viewing, definitely keep watching, because Sunita and Karl - how hot is that?" she quipped.
Coronation Street airs Mondays, Thursdays and Fridays on ITV1.
> 'Coronation Street' star Shobna Gulati praises big Sunita changes
> More Coronation Street spoilers and news