2. "Cold Shoulder" by Adele
On iTunes: itunes.apple.com
If your guy is cheating and is just treating you like crap in general, then you might need to have a good cry while listening to this song. It's about a cheater who treats his lover like she's the one at fault. Here are some of the lyrics: "You grace me with your cold shoulder / Whenever you look at me I wish I was her / You shower me with words made of knives." This one is pretty painful and sad, and it's perfect for that period of time when you're not ready to walk away and can only feel sorry for yourself for landing such a loser. But if a guy is treating you like this, you really need to kick him to the curb, and hopefully there are some songs here that will help you move on.