Any time Azul. I've wrestled with the same thoughts and sadness over lost friendships that I didn't expect to ever lose. It hurts a lot!

Try to continue with the optimism with new friendships though. It's hard to keep giving everyone the same chance after getting hurt, it's hard to remember that not everyone will repeat the same things. I can struggle with that - although I give everyone a chance, there's always that bit in my head that's going "well, this is great now... I wonder when it's going to end?". I try to not worry about it, but I do. But, at least I keep trying!