The heartwarming moment a dad learns he's going to be a grandpa

grandpa hickey
grandpa hickey 

There are few things more heartwarming than watching a proud parent find out they're going to be a grandparent - and this YouTube video captures one man's unforgettable reaction.

Jessica Hickey revealed the good news to her father with a note attached to a child's pacifier in a gift box. At first, her father doesn't notice the message, but when it finally sets in, the only word the soon-to-be grandfather can muster through his tears of joy is, "Really?!"

Hickey posted the video to Reddit, writing, "Told my dad he is going to be a grandpa. I am his only child and my mother passed away 20 years ago.

"He has been asking us for grandchildren since our wedding night.

"I warned my husband that my dad was probably going to cry. And of course we teared up too … I think he’s happy."

We're pretty sure he is, Jessica! 

This article first appeared on Mashable.com.