Formal:
* Saya cinta padamu. (pronounced: Saya chinta pada-moo) - This is the most formal way to say "I love you" and is suitable for someone you are not very close to or in a formal situation.
* Aku sayang kamu. (pronounced: Aku sayang ka-moo) - This is a more casual way to say "I love you" and is appropriate for close friends and family.
Informal:
* Aku cinta kau. (pronounced: Aku chinta kau) - This is a more informal and intimate way to say "I love you" and is suitable for romantic partners.
Other options:
* Sayang. (pronounced: Sayang) - This is a term of endearment that can be used to express love or affection.
* Cinta. (pronounced: Chinta) - This is the Malay word for "love" and can be used to express love in a variety of contexts.
Note: The choice of which phrase to use will depend on the specific situation and your relationship with the person you are speaking to.