why attitude of friends changed with time???

It's not the attitute. It's the priorities.
As we grow, our priorities change. Our responsibilities increase and we start focusing on more people in our lives. This is more likely to happen once you get a job or get married. I am no longer "me". I am "we".

not only friends change with time, any person can change.
one more thing- not everyone change only some one
 
 

hi

because time is big not we are...