What Herb goes well with Passion fruit?!

For my Science experiment we have to make something. I chose to make Soap. I am going to make it with citrus (lemon, lime, orange etc) and passion fruit!!!! I want to add a nice herb so it smells yummy but I cant think of a good one that would match. Lavender and Rose dont seem like they would and cinnamon would make it to spicy smelling and thats about the extent of my herbal knowledge so suggestion please!!!!!! It would be greatly appreciated!!!