Justin Bieber and Selena Gomez's surprise collaboration for unofficial duet 'Strong' has caused Twitter freak out.
The title, which was aired on Apple Music's OVO Sound Radio, features the 21-year-old singer singing the lyrics "What should I do? Should I go?/Who do I talk to? Nobody knows," while the 'Good For You' hit-maker croons, "Wishing I was better at this d**n thing/Cause it's just been too long and I can't change," Us magazine reports.
The fans have flooded the social media site with their reactions.
One fan wrote, "JUSTIN AND SELENA MADE A SONG AMD I'M NOT OKAY," while another wrote, "this @selenagomez and @justinbieber song is a lot for me to deal with."
Another tweeted, "wait selena and justin did a song together."
According to sources, it is unclear when was the song recorded or whether it will appear in Bieber's new album 'Purpose.'
However, the singers, who dated on-and-off for three years until 2013, have yet to comment on the track.