Just add ku (my) to the end of the person's name. So, Candiku.

Indonesian also has
sayang (usually translated darling but also means unfortunately)abbreviated to just 'yang;
kasih (or more commonly kasihku (my love)its derivative kasihan means poor little thing, aaaaaaah).
manis (literally sweet).

There's also the word jodoh. Jodoh is serious stuff, this is the one fate destined you for. Lonely hearts ads are iklan jodoh. I don't think you'd actually call anyone jodoh, though.

Bingley

Bingley