I love you — the casual form.
The plain, intimate form used with a partner, close family, or friends. 사랑해요 adds politeness; 사랑합니다 is the formal version used in speeches and songs. Choosing the wrong level changes the whole feeling.
Korean verbs carry the formality, not the pronouns. Saying 사랑해 to someone much older can read as too familiar even when the affection is real.
Reading a definition isn't the same as saying it to someone. Lingo Kaiava is a voice tutor set to Korean — it uses 사랑해 the way locals do, corrects you in the moment, and never "fixes" the way real people actually talk into textbook Korean.
Free to start. No signup for your first conversation.