Some people become heavily invested in their relationships -- almost to a fault. In fact, they seem to forget there's actually a world outside of them. They lose sight of the fact that the other person in the relationship -- whether it's their friend, parent, or significant other -- is not attached to them at the hip; the person is still a separate individual with his or her own goals, dreams, fears, hobbies, and personality. No one likes feeling as though they're being surveilled or suffocated. Unfortunately, though, many of us contend with a partner who lets his or her insecurities come out through these two particular behaviors: 1. They're controlling. A possessive partner wants to dictate everything from what you eat and how you dress to who you can talk to and when you should come home. They treat you more like a child than as an adult, not allowing you to make your own decisions. Unfortunately, people can be this way for a variety of reasons. They may fe...