#10 on U.S. iTunes
#29 on Pop Radio
#37 on U.S. Spotify
#1 hit in Oceania
#53 in UK iTunes (preorders) (release on August 7th ; predicted to be Charlie & Meghan 2nd UK #1)
And they said, the GP & ATRL is tired of the 60s old school doowop sound from Meghan specifically but then why it is smashing
Because Charlie is coming off a huge smash, Meghan is coming off of a successful debut era, and you actually get to see Charlie's persona showcased more in this song than See You Again and you get to see Meghan in a different light on this song. She verse is a little more hip hop urban influenced so it's nice to see that.
I finally got to watch the enitre mv..and heard the entire song and its such a cute bop lol. plus his vocals are not as annoying as they were on See You Again so that certainly helped a lot.
also he is cute lol and Meghan's vocals are so pretty. its a bop thats why its succeeding
but then why it is smashing 
tbh both song and music video
