If friends disappoint you over and over, that's in large part your own fault. Once someone has shown a tendency to be self-centered, you need to recognize that and take care of yourself; people aren't going to change simply because you want them to.
If you come to fame not understanding who you are, it will define who you are. It shouldn't change you. If you're a jerk, you just get to be a bigger jerk. What fame does is magnify who you are and puts that on a platter for the whole world to see.
The roses, the lovely notes, the dining and dancing are all welcome and splendid. But when the Godiva is gone, the gift of real love is having someone who'll go the distance with you. Someone who, when the wedding day limo breaks down, is willing to share a seat on the bus.
When you make loving others the story of your life, there's never a final chapter, because the legacy continues. You lend your light to one person, and he or she shines it on another and another and another.