"YES. I have seen LONELY in its darkest form. And, I don't have the heart to make anyone else go through the same. No matter how they've been to me, I will always be there for people who need somebody. :)" Great mindset to have.
Whatever relationships you have attracted in your life at this moment, are precisely the ones you need in your life at this moment. There is a hidden meaning behind all events, and this hidden meaning is serving your own evolution.