Ok, there';s this one and then in the Last of The Mohicans where he has to leave her behind and tells her to do whatever she has to do to stay alive, he will find her. But stay alive! And then he has to leave her (because you know the war tribe is after him but only she and her family are protected under a treaty) and there's this moment where you know he's telling her whatever she has to do, WHATEVER, all is understood and forgiven, as long as she stays alive.
And in Breaking the Waves at the end of the movie....I don't want to spoil it for you. But Bess keeps her promise.
Oooh, oooh and in I Am Love when Tilda Swinton and her maid have an exchange, a look at the end of the film and the soundtrack bursts with their shared, understated rapport---I lost it at the Lincoln Center Cinema!