This sucks.

I have just now realized that no matter how much you love someone, how much of your time you've given him, how many hours you've wasted thinking about him, how many favors you've done for him, how many times you've saved his life, how long you've known him, how many tears you've cried for him, how many times you've forgiven him, how many pages in your journal you've devoted to him, how many hugs you've shared, how many hours of deep conversations you've had, how much you understand him or he understands you, there is always that possibility/probability that he will forget about you, act like you don't exist, turn his back on you, do things he knows are wrong, refuse to listen to you, make you feel insignificant, not value your opinion or forget how much he loves you. (the pronoun "she" is also relevant.)

don't forget about the people in your life who have loved you, you may just be tearing their heart to pieces.

and for those forgotten, there are others who love you. remember how it feels and try not to forget those who love you.