You need to stay strong. I know exactly what you are going through. It is so hard to befriend another drug addict. Both of you know what it feels like to be messed up. When I talk about my past experiences, my heart starts racing, and I get this terrible urge to get my hands on something, anything. When you combine two people that feel the same way, you're twice as tempted. I like the idea of talking to people, telling them how I feel, but also knowing that I can't discuss where or how to score some. If you ever need someone to vent to, I'm more than happy to listen, and give my opinion.
Remember the worst is almost over.