General love:
* ʻEkahi aloha - This literally means "one love," but it's not commonly used in Hawaiian.
* Aloha ʻia ʻoe - This means "Beloved, you are loved" and is a traditional Hawaiian love song.
* Aloha nui - This means "great love" and is used to express strong affection.
Unity/Togetherness:
* Hoʻokahi ʻohana - This means "one family" and can be used to express unity and togetherness.
* Hoʻokahi manaʻo - This means "one mind" and can be used to express shared purpose or belief.
Ultimately, the best way to convey "one love" in Hawaiian depends on the context and the specific meaning you want to express.