A complex love story

Hero loves heroine , but heroine loves the villain.
But villain loves hero’s sister,and hero’s sister loves heroine’s brother
Here, heroine’s brother loves villain’s sister .
But villain’s sister loves hero’s brother. .

Again!, hero’s brother is also interested in heroine , and you already know that heroine loves villain.
Finally two people commit suicide.
Who’re they? ……….. Producer and the Director!!