The Korean language has different ways of expressing "I love you" depending on the level of formality or politeness you want to convey. Here are some common ways to say "I love you" in Korean:

• 사랑해 (saranghae): This is the casual way to say "I love you" and is used between lovers and close friends of the same age or younger.

• 사랑해요 (saranghaeyo): This is the polite way to say "I love you" and is used with someone older or who has more social status, such as grandparents or during a speech or announcement.

• 사랑합니다 (saranghamnida): This is the formal way to say "I love you" and is used in very formal situations.

• 사랑행 (saranghaeng): This is a cute and casual way to say "I love you".

• 하늘만큼 당만큼 사랑해 (haneulmankeum dangmankeum saranghae): This is a poetic way of saying "I love you" in Korean, which means "I love you to the moon and back".

Its important to note that Korean has a hierarchical way of speaking, so the level of politeness or formality you use depends on who youre talking to and the situation.