The only thing worse than a physical affair is an emotional one. A physical affair you can get over, but from the time you fall for that other person and taste that sense of something forbidden, it stays with you for a long time.
Morgan was the latest of updates when dealing with Addison and Noah. Noah's absence does nothing but broaden our curiosity of 'What's the Deal'? Addison just ended it, but it more or so seemed like she was avoiding it.
It was actually refreshing seeing Morgan's baby healthy from last season's scare, they mentioned nothing of the baby and Morgan since this season opened and we know situations like this to get that you can't just say 'It's over' and move on. That is exactly why Morgan's appearance was the boldest as she held her baby and asked if Addison and her husband were sleeping together, in front of witnesses; she surely wanted her to feel a lot of shame if her suspicions were true and I'm sure Addison was even more elated that it didn't cross over to that, but does almost count? Of course it does.