You Only Think About Yourself
Relationships are all about give and take—and if you take more than you give, then the balance will be thrown off and your partner will likely seek comfort in other places and people. In fact, this is such a well-known phenomenon that experts have even given it a name: It’s called the Social Exchange Theory, and it outlines how “we are disturbed when there is not equity in an exchange or where others are rewarded more for the same costs we incurred.”