You are part of the Cullens. You are beautiful. auburn hair, freckles on your nose and of course yellow eyes and pale complexion, because you are a vampire. But there is one thing that no other vampire has: red spots that you have on your skin. They are given by your past, since in ancient times they thought you were a witch, and so they decided to burn you at the stake, but thanks to Jasper you were saved, because he vampirized you.
Jasper. well, the two of you were dating, as well as Emmett and Rose.
now you were on the couch, with your back resting against Jasper's chest, and his arm encircling your waist, tracing the outlines of one of the red spots on your arm. No one except the cullens knew the origin of the stains, and so when Bella started dating Edward she didn't know what they were due to, because vampires don't have any signs, right?
in fact, now, while you were leaning against Jasper, you saw that sometimes Bella's gaze lingers on the red spots, but now it didn't bother you, since you were used to all the strange looks that people gave you as soon as they saw your red marks.