Writing a love letter a fourteen??? Girls Opinion, Please:]?

Im fourteen and this girl and I dated, we only dated for like 3 days I guess you cant really call that a relation ship or even the fact that we are in grade nine. We have both dated other people after this but I still have feelings for this girl. Mostly because I haven't felt about anyone like I did and do for her. I wanted to write her a letter, explaining how much I care and like her, and all the great times he had before we had started dating, and all. So I'm kinda hopping that this will bring her back to me because she will se a very sensitive side of me. Im old school so I was going to have the letter on like really nice paper and with like astonishing calligraphy and I don't know if this last one is a bit over the top but I wanted to seal it with a wax seal, because its all like old and stuff :] . What do you think about this, is it to much.