symbol for charcaters

A symbol for the main character, Amanda, I would say reminds me of a balloon. Because the whole scheme involves birthdays, and Amanda getting so fired up on how confused when she kept running to Leo. Its almost like she could expolde if she doesnt figure out what the deal is with Leo. For a symbol for Leo i would say cluelessness. he doesnt really over look the whole running into a girl coincidentally accident  optimistically. He doesnt think its anything specail and doesnt mind the whole circumstace too much.
Compared to the doctor who delivered them,  i believe the symbol would be like a lucky charm. He was the one who said you guys are going to see eachother for the next 11 years and just ave that randomly happen! i think its cool how that worked out in the book. Also the moms have some sort of connection i feel, because they are the ones who remember eachother and find eachother when they always running into eachother.