@zeldaprincess666,
If you pulled yourself out of partying and possibly drug life, and your friends are still doing those things, you probably will not be considered part of their circle anymore. Plus, in your late teens, two years is considered a very long time, since we change so much from year to year at that age.
When you get to your mid twenties, two years won't seem like such a long time, but at your age it is a very long time indeed.
Two questions:
A. What country are you from?
B. When you changed your partying ways, did you go through any rehab or some program to do it, or did you do it entirely on your own?