Love.

A word that is only 4 letters, thats applied to a person. One person that isn't suppose to forget what you have. One person who is suppose to love you. One person who is suppose to realize what they have. One person is not a liar. One person who is reliable on. One person who wants the same thing you want. One person who won't forget you. One person who you've chosen out of a billion. But most of all, one person who isn't suppose to take that word back.