Formal:
* E aloha wau iā ʻoe (I love you) - This expresses deep affection and respect.
* Aloha ʻoe (Farewell to you) - This can also be used as a term of endearment, especially in a formal setting.
Informal:
* E ke aloha (My love) - This is a very affectionate term.
* ʻO iaʻu nō ʻoe (You are mine) - This is a very intimate term.
* Puaʻa (Pig) - This is a term of endearment used for someone you love dearly, similar to "honey" or "sweetheart."
The best way to say "my dear" in Hawaiian would be to use a phrase that reflects the specific relationship you have with the person you're addressing.
Keep in mind that Hawaiian culture emphasizes respect and politeness, so choosing the right term is important.