Day 2: A song that reminds you of your most recent ex boyfriend/girlfriend. (In my case, boyfriend)
I can't really find a song that says "You're an asshole because my friend caught you kissing another girl and I only went out with you in the first place because I felt sorry for you." (I'm a bitch, get over it.) The first song I thought of was, "FU" by Miley Cyrus (One of my favourite songs xD)