friendships?

So, today one of my old friends got on the bus. We hadn't seen each other for over a year, and it was a really awkward encounter at best. We talked about school, and life but the whole time the conversation felt really distant. We told each other that we would keep in contact, even though we both knew that we weren't going to keep in touch.  All the could be expected was more random encounters and forced conversations. I don't why, but it seems like many of my "friends" drifted away. I was never the type to tell people my life story, it just never seemed right. As time goes on, i am becoming even more cynical about friendships. I see people back stab each other on a daily basis, and i am sick of the fake sugar-coated smiles and the meaningless conversations. I don't see how you can hate the person that you were hugging earlier that day. I guess it because girls and drama seem to go hand in hand so i tend to build a wall, not because i am afraid of being hurt, but because i don't feel like dealing with pointless drama. It's as though in many circles of friends, there are secrets that people tell one another, and later those secrets are used as ammunition. The funny thing about all of this is that i encounter more drama in college, then i did in high school. I guess that shows how "mature" people are.