But now you are growing more mature, and this person is growing as well. And differences in opinions clash. The bonds begin to tear and awkward silences begin to seep in.
The realization is a painful moment. One where you realize that someone you deeply care for, and yourself, have grown apart and it's too late to change it. You've made new friends, and they've made new friends. It's as if the relationship died. And whoever it was that was once always there for you, has now been replaced by a zombie of the total opposite.
It's a sad day no doubt. But, one thing you must remember, is the memories.