Megan sucked and nibbled on Jim's lips while he stood there as a statue as he was not sure what to do. This was not supposed to happen and he couldn't push Megan away.
In the next scene, Megan's character was supposed to slap him and that slap was important for the play to move forward, he was not sure what to do to get slapped by Megan.
This was Amanda's main concern too. If that slap doesn't happen then the story can't progress but if Megan herself is kissing Jim then why will she slap him, there will be a loophole in the plot which would mess up the whole play.
Backstage Leo and Zoey too were worried about the same thing.
