How many times have you heard this question? If you are married, your spouse probably asked you this question a couple of times. Young people in a relationship probably asked this question more often than not.
Why do people ask this question? While it may be difficult to establish the exact reason why this happens, due to the complexity of human nature, we can safely conclude that this question seeks re-assurance.
If you walk up to a stranger and ask him or her the question, 'Do you love me?' They would look at you with an expression that says, 'Are you out of your mind?' This establishes one fact; before a person would ask this kind of question from another, there would already exist a relationship.
Having established that a relationship already exists. We move to...