If you want to make him hurt because he rejected you, why not create a transference spell. Transfer these emotions onto him, and then simultaneously work a spell that makes him seem unappealing to others.
There could be several ways to do this, and if you don't want to get close to him again you can simply use a photograph.
Take a candle (a simple birthday candle will work for this spell) that has a color that is compared to the emotion you're feeling. If you're feeling rejected, maybe blue for sadness, or black for anger? Set it on a picture of him and burn it. You could say something simple like this "As this candle burns down, he shall feel the rejection caused to me."
As for making him feel unappealing, you could leave trash on the photo, or dump it in the trash, and say "No one will want you now, you'll always seem like trash, as this is taken away, so is your appeal."
Good luck in your endeavors!