The video is very cute.
Shawn Mendes is probably best known for his ridiculously catchy song Treat You Better.
It turns out that as well as being a good singer, he's also a talented songwriter and very good friend.
Shawn recently performed at the wedding of his friends Catherine and Matt. He didn't just whip out the guitar and belt out a tune or two though, as he actually wrote and performed their first dance song.
Adorably, Shawn says that he and the groom wrote the song for the bride Catherine.
https://www.instagram.com/p/BO-2GJJAXS4/?taken-by=tmmattjr
The song which is not officially released is called Try My Best.
https://www.instagram.com/p/BPBK4bND-Kk/?taken-by=618studios
The newlyweds can be seen swaying on the dancefloor with the groom wiping away happy tears.
It's really very cute. We just wish we had a famous talented singer-songwriter friend who could perform at our weddings one day.
