Before Midnight is a very beautiful crude and visceral drama. It concludes the trilogy in a very satisfying way that represents the reality all too well 
The dialogue again is excellent and the performances are Academy Award worthy. Perhaps the best in the trilogy 

When Before Midnight delivers it delivers. Also the cinematography is excellent and the directing is superb. Some characters don’t really work but they are not the focus. 
The third act here really shines and gives stunning moments that really elevate this trilogy above other romances 

Perhaps my favorite in the trilogy