magpakailanman dito sa puso ko
En nuestros corazones para siempre.
Forever in my heart translates as Für immer in meinem Herz.
En su corazón para siempre Alternatively: Eternamente en tu (or 'su', polite/respectful) corazon.
Aloha: Answer: You say Mau loa e Kō kāua makakēhau (mow lo-ah ay ko kow ma-ka-kay-how). This is interesting for 2 reasons: if you are talking about many persons when you say 'our', you might...