I don't understand your confusion. As you said, they're waiting until next season. This is what happens in TV shows: they draw out the 'will they or won't they' since it's much more interesting than two people in a happy relationship... until they break up.I liked it overall, but why didn't they conclude a story for Haley and Andy? They just gave up on it. Wtf?
Maybe they're waiting until next season, but I would've liked to see more. Andy is basically Phil, which is why a lot of the scenes following Andy and Haley were followed by Phil and Claire. They made that pretty obvious.