In a word for word translation, you say:
Aloha po / A hui hou Aloha (for good night)
koʻu aloha (for my love)
See this Hawaiian Electronic Library to learn some of the most commonly used Hawaiian words.
Hawaii is the only American state to have two official languages, Hawaiian and English. However, a 3rd unofficial language is also widely spoken, Pidgin which is a slang combining words from many aspects of island life and culture.
To know more about the languages spoken in Hawaii, visit InstantHawaii.com
Tip! Here are 27 words to learn before you visit Hawaii, featured at Huffington Post and know the 16 funniest expressions in Hawaii (and how to use them) shared by MatadorNetwork.com.