Marriage, eventually in Magical Melody, it's gotta be done. Here are the things some of the people you can marry like:

Joe & Kurt: They both like branches, not stakes, but branches.
Gwen: Shes a softie for flowers.
Alex: Herbs and cayenne peppers.
Basil: Herbs.
Dan: Gold ore.
Jamie: Mushroom soup.
Ann: She likes flowers and stones, yes, stones.
Lyla: Flowers.
Nina: Flowers.

That's all for now! Good Luck with your proposal!