Maybe to protect ourselves from being “duped,” or maybe because we’ve been taken advantage of in the past, many of us can get in the habit of keeping score in a relationship. Anytime we’re going to do something nice for our guy we ask ourselves, “Would he do this for me? Has he done this for me? Does he deserve this?” But keeping score in a relationship is the beginning of the end because that’s no longer love; that’s competition. Here’s why it ruins relationships.