Brief Encounter
The opening / closing scenes are replicated from Brief Encounter almost frame by frame. Surprised more haven't commented on it. Suppose this had more of a 'happy' ending though, or close enough.
shareIt's been discussed in the past (IMDb deleted topics that existed before May 28 2016) and it's included in the Carol Connections.
'Brief encounter', a deliberate reference?
http://www.imdb.com/title/tt2402927/board/thread/258803965
The framing device of parting lovers interrupted was inspired by BRIEF ENCOUNTER.share
http://www.imdb.com/title/tt2402927/trivia?tab=mc&ref_=tt_trv_cnn