It was on Friday night's episode after Sally confronted Kevin. He claimed that Molly started it by flirting with him and it annoyed me because it isn't true and she can't defend herself and Sally might believe him.
He definately made all the first moves.
I remember too, he was definitely the first one to make the move, she seemed at first more flattered than anything else, then she got hooked on the big passion thing.
However, what makes me mad about Molly is the following: Do you remember when she was going to get married to Tyrone and he got caught for stealing that dodgy gear? She threw him out and went on and on to him for lying to her, and treated him like shit. He was after all selling dodgy gear because he wanted to give her the wedding of her dreams. So when she started sleeping with Kevin on a regular basis and spinning all those lies she turned into the biggest hypocrite ever.
But no, she didn't set out to have an affair with Kevin, he certainly began it. I think she felt the big passion with him, the adrenaline of excitement, and after that her life with Tyrone seemed in black and white and boring. She had had a bit of the drug, and she wanted more. ANYWAY, all this to say that I agree, that Kevin did the initial running (the lying bast***d). And I still think that sunita will die... However, I remember reading on some corrie site that there was going to be a wedding, 3 funerals and a birth. I don't think they can call a little baby Hope, and then let her die, Hope is the last think we lose in life, and soaps tend to have symbols. In the middle of such a disaster they cannot let "Hope" die.