I'd take this story with a pinch of salt. While Sally and Kevin might well kiss, I'm sure they won't get back together. Stuart Blackburn's pledged not to split up Sally and Tim because he loves them as much as we do, and then there's the recent spoiler that Tim and Sally get engaged:
http://www.soapboards.co.uk/forums/showthread.php?135540-Tim-Faye-s-dad&p=824984#post824984
I've learned the hard way that soap producers aren't to be trusted, but SB knows very well how popular Sally and Tim are with Corrie fans; he'd be a complete fool to split them up permanently. This kiss (if it's true) is probably just an obstacle for the pair to overcome. Soaps love making the path to true love as dramatic as possible. :wall: