Eva starts to suspect that Nick (Ben Price) is having an affair with Kylie Platt (Paula Lane) in upcoming episodes. Determined to get her revenge, the feisty blonde decides to publicly shame the pair by announcing their 'fling' at the Bistro.
Tyldesley told All About Soap: "Eva's a diva and likes a bit of drama. Part of the aggression she's carried from being cheated on by her ex is now coming out with Nick, so she decides that it's time to make a show of him.
"She reveals it in front of everyone at the Bistro and I don't think Nick or Kylie have a clue what's going on. Everyone believes her claims, because all of her 'evidence' makes such sense - she's chuffed to bits with herself as she's sure she's completely in the right and Nick's got exactly what he deserves.
"However, it's not long before Kylie and Nick have the chance to explain and it's suddenly clear Eva's gone too far."
Eva is soon left distraught when wrongly-accused Nick refuses to forgive her for humiliating him.
Tyldesley added: "Eva is heartbroken - even more so because she's brought it on herself. She's gutted she didn't just ask him outright rather than acting so immaturely.
"She just assumes she will get him back and, because of the way she feels about him, she will try. But whether she can win him over or not is a whole different ball game - Nick's feelings aren't anywhere near as strong as Eva's are."
Coronation Street airs Eva's revenge attempt on Monday, May 21.