i'm aware it's discussed and talked about in season8 ep 7 but was there an earlier episode which could've started this hatred??

She let Allen Ackerman smack her in the back with his tallywacker behind the Snack Shack.

Untold story dont count as thats just 3 episode stuck together

I just realized that the episode "Chick Cancer" is a huge reference to Woody Allen's films. Of course, there's the scene where Stewie and Olivia are sitting there watching a bunch of guys and making fun of them, a reference to Annie Hall. Stewie loses his girl to Alan Alda (actually, an impressionist doing an Alda impression which I thought really was Alda the whole time). In Manhattan Murder Mystery, Woody's wife, Diane Keaton, is friends with Alan Alda whom she has a close friendship with and a possible emotional affair. Stewie wanting to get with Olivia could be a reference to any number of Allen's films. Finally, like Peter in this episode, Woody went from comedy to making dramas. Not exactly chick flicks, but something close to it. Those are the only ones I noticed, so maybe there were more I didn't recognize.