I don't know why ~ 왜 ~ 인지 모르겠어

I don't know why I like this

I don't know why I love you

I don't know why I said that

I don't know why that happened

참고 서적 : 해커스톡 해커스톡 왕초보 영어회화 10분의 기적 : 기초패턴으로 말하기(www.yes24.com/Product/Goods/64703271)