Friends

Lately I feel like I have no real girlfriends. All the girls I've been friends with have fucked me over, I'm to the point where I can't trust anyone. I feel totally taken advantage of. I became friends with a girl I used to be friends with and she ditched me last night to hangout with her other friend and lied. I feel like being too nice has screwed me over in the end. Anyone else experience this? Tips?