Me and my close friend are drifting apart?????

You sound like a very nice girl but with low self esteem. Don't worry about what others think of you but what you think of yourself. At you and your friends ages, trying to find who we want and what we want to be like is a learning process and making mistakes is all part of that process. Try to be the friend you would want to have as a friend ( Do unto others as you would have them do unto you, You know,). Choose qualities in others that you like and try to incorporate them into your personality to see how it works for you, like smiling and listening and being polite or funny when appropriate. Set a good example for others so they may want to be like you, don't complain and be a positive and supportive friend (things like that). Also try to be interesting to and interested in others and I'm sure things will work out just fine for you eventually. These things take time and friends come and go over time so please don't take these things too seriously although I know they seem that way right now.