Why this video of a woman visiting her grandfather has the internet in tears.

Usually, scrolling Twitter is a soul-crushing experience that will leave you feeling bitter and angry at the world.

But sometimes when you least expect it, you’ll come across something so pure it’ll bring a tear to your eye.

Enter Jen Barclay and her extremely sweet grandad, Robert.

Scottish student Jen shared her love for her grandfather in an adorable Twitter post, complete with a video compiling his pure joy of greeting her at his front door.

My wee Grandad, 87 years young and he’s my no.1 guy???? I love him with all my heart. And I love recording his reactions when I come to visit. I hope everyone can appreciate the video I’ve made as much as I do????????????xoxo pic.twitter.com/4XK4TEBctQ

— Jen (@JenBarclayX) December 14, 2018

The video shows Robert answering his door 17 times, always smiling, looking dapper and offering a funny one-liner.

Seriously. Look at his smile.

In another tweet, Jen said no matter how many times she watches it, the video of her "number one guy" always brings a tear to her eye.

And she's not alone.

In two days, her tweet has gone very, very viral with almost eight million views and 590,000 likes.

Twitter users have responded with love for Robert and stories of their own grandparents.

My grandfather died when I was 12. I always wish I could have had more time with him; he was a wonderful man. I cherish the memories I do have (including all of those Italian Sunday dinners!) a great deal.

This is really nice. Well done.

— Colin Moriarty (@notaxation) December 16, 2018

“Hello, honeybun”. Says it all. He loves you. Over and over and over. Best thing ever. ❤️

— Eva (@OrpheusDescent) December 16, 2018

Cannot get over how happy he is to see you each time ????

— Evangeline Fordham (@evaayyy) December 16, 2018

The last may have been the sweetest. I watched this with my 15-year-old daughter whose grandfathers died before and soon after her birth, and we were both so touched. What a lucky girl you are. Thank you for sharing.

— Alison Hodgson (@HodgsonAlison) December 16, 2018

This is perfection! I miss my grandpa with every fiber of my being. He was my heart and life wasn't the same once he passed. I'm SO happy you shared this! And I'm SO happy for both of you! What an awesome relationship!

— Your Official Holiday Light Critic (@Riseaboveit38) December 16, 2018

This actually made me cry. You lucky lady Jen. I miss my grandad so much. You can't buy that can you?

— Joanne Sherif (@JoanneSherif) December 16, 2018

This makes me miss my grandparents in a good way. Not to mention makes me thankful for all the times I was able to visit with them.

A grandparent's smile is a special thing. The way the light up when they see you is hard to put into words other then magical.

— Dante (@TripleJoker) December 16, 2018

His sweater collection though ????????

— enviro-girl (@CarolSchenk1) December 16, 2018

Yeah... we're all crying. It's okay.

Overwhelmed by the response, Jen joked that her Grandad "broke the internet" and decided to give the people what they wanted: More Robert.

She set up an Instagram page so that we can all follow his adventures.

 

View this post on Instagram

 

I’d like to officially introduce Grandad, who’s name is Robert and we live in seaside town in Scotland ???????????????????????????? he is 87 years old and the greatest man ever???????????? #grandad#scotland#cutegrandad

A post shared by jenbarclayx (@the.grandad.diaries) on Dec 15, 2018 at 1:31pm PST

She has only posted one photo so far, but the account already has 2000 followers.

We, and the rest of the internet, can't wait for more of our new favourite person.