You both are married but never reveal the true identity, you're a killer and so Khaizer did. On evening you both are eating when suddenly you both excuse to each other that you guys going to the bathroom

After some time You immediately grab your gun and when you're about to go to him you saw him pointing a gun on you and you both shooting to each other, as the time goes by you realize that you love him so did he and the shooting stop

"I'm sorry, Love. I love you" he said and hug you tight