Name a song you used to hate but now love and a song you used to love but now hate.

Used to hate :
Happy
23
Chasing The Sun
I Knew You Were Trouble
Clarity
Wake Me Up
Stereo Hearts

Love Now this one !!

Used to hate;
Same Love
Shangri La
100 Years To Live
Wrecking Ball
Let Her Go (Passenger)
Demons
Clarity
Still Into You
Stay The Night
Ghost Lovescore

And that's just a few.

As of the songs I don't like anymore; anything by JB, his shitty personality ruined his songs for me.