Relationships can be an exciting time. We've all been there: Butterflies in the stomach, hormones on overdrive, your special someone pervading your every thought. Unfortunately, though, it is also during this exhilarating stage of our lives that we can make decisions we later come to regret. I've narrowed down the biggest relationship mistakes we can make to four: 1. Cheating: It doesn't get any worse than this. Cheating is the utmost form of betrayal. Even worse is committing the act and later trying to hide your tracks. If you don't feel you can remain loyal to your partner, don't get into a relationship. Think before you act! A few nights of pleasure aren't worth the feelings of heartbreak, jealously, and resentment that will ensue. 2. Having unprotected sex: Is it any wonder there are so many unplanned pregnancies in the United States, let alone the world? People get in the heat of the moment and forget to properly suit up for the ride. Whether it...