when the kiss is no longer passionate ....
when the hug is no longer as tight as before ....
when he just bochap even when u are so ganjiong about HIS things...
when a simple question out of concern can turn out to be "controlling his life" ...
when he chooses to be with his friends (instead of u) on weekends .... and u had not seen him for the entire week ....
many many more ....