User blog comment:Bboy3165/Guess The Lyric/@comment-25868188-20160228045459

Tell me if I won, if I did, what's my prize? - Cool For The Summer by Demi Lovato

We would walk on the sidewalk - Lean On by Major Lazer, DJ Snake, and MØ

You left in peace, left me in pieces - Same Old Love by Selena Gomez

i know some of the other answers but I'm gonna let other people try to guess those.