There are happy moments in relationships such as when people decide to make it official, when the get engaged, when they are having a baby, or when they are on their anniversary. Unfortunate, unwanted issues can begin to creep up in relationships when you least expect them. These can include jealousy, anger, and miscommunication. Oftentimes, it is actually when people start to get closest to each other that they start to encounter these types of issues. Some of the most common ones are controlling behavior, a lack of a sense of humor, becoming over sensitive, and feeling over protective or uncaring. It can also lead to feelings of being trapped, insecure, and worried. The sex might begin to lose its luster, and unhealthy coping mechanisms can begin to take over.