One of the most heart-wrenching moments in last summer's
Captain America: The First Avenger came near the end, when (
SPOILER ALERT, obviously) Steve Rogers (
Chris Evans) promises Peggy Carter (
Hayley Atwell) a date that he fails to make because he sacrifices himself to save the world. When he wakes up in 2012, their scheduled appointment, of course, has long since passed. But according to director
Joss Whedon, the pair almost h...