You were enemies with Childe since second grade. Why? He was always competitive with you and always got a higher grade than you.

One day, you were playing truth or dare with your friends and one of them dared you to make Childe fall in love with you In less than a week.

You were determined to make that boy in love with you.. and disgusted.

...

After that, you were following him around like a lost puppy. So you used one of your pick up lines on him.

"What..?" He said, confused.