Justin Bieber Feat Boyz ii Men Fa la la 
Bm D A E
Done by ear :) 
& played differently in some parts of the song enjoy <3 
Listen to the song to hear the different parts & these chords aren't 100% accurate
First verse:
Bm                            D
Is it time, I hear you can give it,

Give it, give it, give it all
A                                       E
One through the note your list you can get it,

Get it, get it, get it now
Bm
Make your wish tonight
D
When you open your eyes
A
When the lights go bright girl
E
I'll be right there

:)