What is i love you- older in Korean?

In Korean, "I love you" is translated as "사랑해요" (salanghaeyo) in a polite form or "사랑해" (salanghae) in a more casual form. If you want to express it in a more formal or older style, you can say "사랑합니다" (salanghamnida). This formal version is often used in speeches or when addressing someone with respect.