A : I thought when we love someone, we'll be happy
B : Yes we are
A : Then why its painful when they go away
B : Because its what you feel. Its real
A : Love is hard then
B : Nothing come easy bro
A : My heart ache. Its really hurt
B : Then make it a lesson, not to hurt anybody in future
A : Its not fair!
B : Before you judge, try to understand why. When someone comes into your life, ALLAH sends them for a reason. We don't meet people by accident, they are meant to cross our paths for a reason. Either to learn from them or to be with them till jannah
A : Then why this thing happened?
B : Well.. sometimes we must hurt in order to know. Sometimes our vision clears only after our eyes are washed away with tears
A : What should I do?
B : ALLAH said in Surah Al Baqarah:45
"And seek help in patience and prayer"