You meet someone. You two get close. & It's all great

You meet someone. 
You two get close.
& It's all great for a while. 
Then someone stops trying. 
You talk less. You have awkward conversations. You see eachother and do your best to avoid them.
Then you start drifting further and further apart. 
Then you have no communication whatsoever. 
The memories start to fade. 
Then that person you know, becomes somebody that you knew. 
That's usually how it goes.
It's sad isn't it? Because once upon a time you two thought you would never fade. and maybe one of you is still holding on. Maybe one of you still remembers everything that happened. But neither of you know why it happened. All of a sudden, it just did. 
And that's the saddest part of it all.