Romantic:
* ʻO ʻoe koʻu hōkū nani? (Are you my beautiful star?)
* ʻO ʻoe koʻu hōkū ʻālohilohi? (Are you my shining star?)
* ʻO ʻoe koʻu hōkū aloha? (Are you my love star?)
Friendly/Platonic:
* ʻO ʻoe koʻu hōkū? (Are you my star?)
* ʻO ʻoe koʻu hōkū ikaika? (Are you my strong star?)
Literal Translation:
* ʻO ʻoe koʻu hōkū ʻālohilohi? (Literally, "Are you my shining star?")
Note:
* ʻO ʻoe means "you"
* Koʻu means "my"
* Hōkū means "star"
* Nani means "beautiful"
* ʻĀlohilohi means "shining"
* Aloha means "love"
* Ikaika means "strong"
Remember that Hawaiian is a rich language with various nuances, so the best way to express the meaning you intend is to use the phrases that resonate most with you and your relationship with the person you're talking to.