There is a thai drama that came out recently...It's about a girl that was supposed to be a child bride to a brat dude because she of her good luck..but she was an ugly duckling or something (hmm this was in high school)...years past...and she works as a dj or something and his parents want her to marry him again..she agrees for revenge..oh someone is trying to kill him or something...anyone know the title?

Some of your description sounds like Because of Love. She isn't a DJ though, nor do I remember anything about high school. Hope you find the title you are looking for.