'Make sure to appreciate people while you have them,' the 21-year-old wrote.
From 'Sorry' to 'Mark My Words' - these are the sweetest lyrics Justin Bieber sings about his ex-girlfriend.
The 21-year-old posted a message on Twitter in honor of his friend, Thomas Ayad, who was killed in the Paris terror attack last week.
Here's what he has to sing about Selena Gomez and his recent troubles.
The singer bursts into tears during a fan Q & A at his first show in Los Angeles.
The 'Love Yourself' singer got emotional and prayed for Paris on Friday.
Justin Bieber, Kim Kardashian, Foo Fighters and other celebs express their deepest condolences to the victims of Paris terror attacks with a viral peace sign.
Terror attacks in Paris left over 100 dead on Friday, including some concertgoers at an Eagles of Death Metal show.
How will their new albums stack up?
'Purpose' and 'Made in the A.M.' will both street on Nov. 13.
The actress freaked out when she met the pop star on 'The Ellen DeGeneres Show.'
Jennifer Aniston hangs with two famous Justins on "The Ellen DeGeneres Show."
The 21-year-old pop star teared up watching the late singer's documentary.
Rogen admitted he started the fight for no reason.
