Zim chased the boy out into the pouring rain. He was quickly drenched and burned as he caught up to Dib. He heard his skin sizzle, but didn't care. He gripped the other's arm tightly and whispered, "Don't go. Please, please, don't go. Don't leave me."
"I have to. Get inside before the rain melts your skin off."
Dib tried to pry his arm free, but Zim clung to him with a death grip, almost cutting off the circulation to his hands.
"I don't care about the rain. I care about you."
"See, this is why we can't stay together! Your so stubborn and you never listen to a single word I have to say. You don't respect me."
"I respect you, Dib-love! I love you! Please don't leave me!"
"Do you? Then respect me now and let go. Let go of me now, Zim."
"If I let you go, I'll never get you back! Stay with me, Dib. We can be happy together. The world means nothing to me. I don't want to destroy it. If you leave, I'll have a reason to blow it to pieces! I love you! Can't you understand that? I betrayed the Tallest, the entire Irken empire, to be with you. How could you be so selfish and leave me, leave me so the Tallest could sit and laugh at me, like they used to do? How could you leave the only person that loved you, talked to you, helped you? Don't be cruel and stay here! We can make it work, Dib! Please, please don't leave me! Please don't go! I love you! Please stay!"
Pink tears streaked the Irken's cheeks as he begged and pleaded. Dib looked into his pink eyes and and had to try hard not to start crying himself; he didn't want to hurt the Irken. Not like this. Not ever. But he must. How could he be with someone who had lied about everything? No. He had given Zim too many chances before. He had to go. "I'm sorry, Zim." He yanked his arm free and turned to walked away. He let a single tear run down his face and left his one true love behind.
Zim stared after him long after he had gone, standing there, letting the rain burn into his skin, scarring him for life. The physical scars aren't the bad ones, he thought, and sunk to the ground, his cheek on the sidewalk, and cried. The rain washed over him in sheets. He didn't feel a thing, but felt so terrible at the same time. He closed his eyes, shutting out the world around him, but no matter how hard he clenched them closed, all he saw was his Dib, laughing, crying, grinning.
Or what used to be his.
Zim lay on the sidewalk for who knows how long, crying, crying, his tears staining the concrete pink. He fell asleep with the memory of his first kiss with his Dib playing threw his mind, over and over, like the repeat button was stuck. He still remembered the rush, the surprise, then the sweetness that followed. He missed him so much already; how could he live with this forever? He imagined him here with him.
"Get out of the rain, Zim."
"I like the way it hurts, Dib." He whispered to his imagination, and closed his eyes once again and let himself fade into the black of sleep.