Jealousy can be a natural human reaction, and it doesn’t automatically mean that something is wrong emotionally in your relationship. Whether it’s the envy of a friend’s new exciting relationship of that tinge of discomfort that comes from watching another girl flirt with your partner, these reactions can be a normal part of life, and we shouldn’t always assume the worst. But there sometimes is a fine line between “normal” jealousy and controlling or threatening behavior. And overactive jealousy can be a classic red flag.
