Written by Katie Byrne, published 25th jan 2017
Chances are, you're a Shawn Mendes fan: you know, him of the chart-topping hits Treat You Better, Stitches, Mercy...
(Yes, you've almost certainly got one of those tunes stuck in your head now. #SorryNotSorry)
So when he offered to perform at the wedding of his friends, Matt and Catherine, they naturally jumped at the opportunity.
TAYLOR SWIFT CRASHES FANS' WEDDING
The crooner wrote a song just for the occasion - which took place earlier this month - telling the bride before he began his performance: "Matt and I both wrote this for you, Catherine, so I hope you love it".
And happily enough for those of us who weren't there, a video of the performance was shared by 618 Studios, the videographers the newlyweds hired to film their big day.
THIS MAN'S BEAUTY AND THE BEAST PROPOSAL IS EVERYTHING
The film was captioned: "Everything about @tmmattjr & @rabbitfoodformybunnyteeth's wedding was special, but their first dance may have been the best ever. So grateful to have captured this moment for them... A custom song performed by their friend @shawnmendes!"
Watch it below (and prepare to want Shawn Mendes to perform at your wedding, too).
Image: Instagram/rabbitfoodformybunnyteeth