It was a great episode. Hopefully you will get to see the rerun. Angelgirl hit the highlights. Let me expand.
At the dry run of the Dragonfly, Jason showed up uninvited. He told Luke that he and Lorilei were still an item. Luke confronted Lorilei and she said she was not still with Jason. Then Luke and Lorilei kissed.
Rory and Dean ended up in bed together. She is being naive and thinks Dean will leave his wife. Dean said they weren't getting along but made no promises. Lorilei was very upset when she found out and told Rory that he wasn't Rory's Dean anymore, he was married. The show ended with Rory sobbing. I've never seen her out of control.
There were other story lines about the inn not having doors on the rooms, and Kirk and his night terrors, and Lorilei's parents being separated.