As in "our hearts match" and "the perfect match". Could it be an idea for wedding favor if interpreted that way? (have to make sure no one accidentally light them inappropriately during the wedding though)
Lemon heart -I used to work in the deli dept. While making a fruit platter I cut into a watermelon and found a beautiful heart shape inside. Wish I still had the pic I took. It's awesome when these things happen.