Hope-shattering friendship breakup?

I'm beginning to feel as if a lasting friendship is impossible for me to find. After making mistakes with one person, there was no turning back and I had to let them go. Now, I'm officially friendless again. My worry is that I won't find another friend as nice and forgiving, and if they leave me it will be over superficial reasons. This one person was a rarity, but sadly the friendship ended after five months. I'm looking for a friend that will last a lifetime. At this point, I'm beginning to lose hope that I ever will. Any advice? I'm also feeling a hostility towards God right now.