Why ppl cannot understand that how much we 사랑 them..?

Why ppl can't understand how much we 사랑 them .?
No matter how much we care , 사랑 .. They just hurt us?
Okay , hurt me .. , do i have problem in me ?
Talking about , friends/family....
또는 always bless 의해 hurt and tears ? Can anyone always be in wrong company ??