A friend of mine had changed??

I felt quite empty somehow; I used to have a lot of good girl friends. I guess is because of the different course and school, we are in now. Maybe because of that our distance had dragged us apart. I remembered a friend or person who told me this quote. “This is what happens in life. People find new friends and new sisters. It’s called Natural selection”

I really miss them. I don know how to tell them how I feel about it, cos words couldn’t express from my feeling. That day, I hang out with one of my best friend. She saw that advertisement on that bus, and she told me to see it. So my mind was like focusing on the advertisement, then I didn’t heard what she said cos the road was very noisy due to the cars and buses around. I replied “huh”? I don know why she replied in such an angry tone “see! You weren’t even listening to me!” But she asked me to see that bus advertisement, and now… I really don know what to say. She wasn’t like this before; she is a very sweet and thoughtful girl.
She told me how she was having fun with her friends and having dinner at some nice restaurants. We always end our program very early, in some way do really spoil my mood, and we are like hardly have to time to hang out together due to the packed schedule given by school. We didn’t have lunch at those restaurants, but we had most of our meal at fast food. I don complain or envy about this. She even walks without waiting for me, for example - bus she got up herself first without waiting for me and I’m carrying a lot of stuff etc… Is she still the friend I know in the very first place??