Hachiko
The story of a Dog who patiently waits for the return of his owner every single day, not knowing that he is dead and will never return.
What brings you to tears is the fact that this creature is so loyal and loving he makes it a point to wait every single day at precisely the same time for nine years, nine months and fifteen days for his owner to return.
That kind of loyalty and love is shown by this beautiful creature who expects literally nothing in return, and that's what moves you the most.
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This scene in particular
It's about a man who spends the remainder of his life trying to fulfill his late wife's dreams, until much later in the movie where he discovers a message from her.
In the message his late wife Ellie thanks him for the adventurous life he gave her and requests him to go and have a new one, it really leaves you a sobbing mess.