I'll give you a question, please answer with step-by-step reasoning process.
Loss of someone you love can cause what kind of feeling in your heart?\nOptions:\n- painful\n- happy\n- blind\n- contagious\n- bring joy

painful
When people leave, connection is broken which causes pain.

Pain is a negative emotion that happen in negative situation.

Losing someone you love is negative situation.

.

Final answer: painful