Kathleen and Joe. Anna and William. Annie and Sam. Oh, and we can’t forget Harry and Sally. Bring your comforter to the couch and pour a tall ice water because you’re about to go through every emotion possible for the next 119 minutes. Forget about the regrettable 1:48 a.m. text you sent last night and let Norah Ephron handle the rest. Just make sure you don’t fall asleep before it’s over with a glass in your hand — red wine can be tough to get out of couch cushions.