Can I really trust any of my friends?

Can I trust my friends if they tell things to people that I tell them in confidence? If they promise they'd not say a word, and they break me that promise. Are they really my friends? See I don't have very many friends, let alone feel like I can trust my family. I know I'm not on a good path, but thats because of depression and my life that I've had so many problems with. I have trouble making friends, and believe me, I just want to be perfect, have friends and be normal. But its kinda hard for me to feel normal, when I can't even make friends, let alone trust the ones I have. Should I keep the friendship, or break away? How can I break away if I need to? HELP! D: