In my experience, watching a heartwarming video
brings up the tears that occasionally sit on top of
my heart like a lead weight.

I think the lonelier a person has been from earliest
childhood and onward may be related to how one is
affected. It's not in our nature to be lonely or even
alone. But we live in terribly lonely times.

The yearning sits there, in the human heart. An ache.
Heartwarming videos cause us to feel our own heart,
the love and longing therein. Or sometimes sadness
and emptiness there.

There's the longing to be free; and for many there
is a load of sorrow and doubt sitting heavily upon
their hearts, suffocating the hope. Then you see a
video like this and it gets into your heart, and hope
gets stirred up again. Tears come up, maybe, and
and so does gratitude, disbelief, relief, sorrow,
gladness. Often all at once. Sometimes just a tiny
bit, and sometimes the dam breaks.