There comes a point in your life when you realize:
Who matters, Who never did, Who won't anymore...
And who always will.
So, don't worry about people from your past,
There's a reason why they didn't make it to your future.
There are too many people in this world to meet everyone, too many even in your city, so the Lord specially selects people to send into your life who you can teach or learn from. Each person in your life was put there for a reason. Some move on after the lesson is learned, some stay friends forever, but know that God has put them there as a gift.
Good, loving friends are hard to find. Don't let go too easily.
Work out misunderstandings and disagreements.