I just wanted to say I don't think the synopsis above is quite accurate where it says that Stacey doesn't want to have another relationship with Ned. She did not say that. She gave him a very emotional hug and asked if he wanted to stay in the living room, which was a bit odd, and he chose to continue on his trip.
It could be interpreted as needing time to sort things out, not a real ending, and I think rather it was meant to be the season-ending cliffhanger.
Or maybe I'm just a romantic.