Wat should i get my girl for valintines day?????

im 12 and i dont know what to get my girl for valintines day. She is 14. Please help me!!! i was thinking about bringing her to build-a-bear,getting her her favorite candy which is skittles, a kiss, and a rose... is that a good idea???????? we have been going out for 2 weeks now and i think she is perfect for me.. she is willing to have with me to.