Help find this movie about parallel universe or butterfly effect

man dating women and they moved together
the man has son and the women have daghter
the son and the daghter start having relationship
but the movie will show parallel universe or butterfly effect
the movie will show the different path for this young couple for each choice they choosed
and the movie will show you different story for each path
i remember a secne when the girl was want to leave by the train
and they boy was have two choice to let her go or to hold her
and each choice will create different path
i’m not sure which year i watch the movie but mostly before 2016

Mr. Nobody?

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