Witch.

A sixteen-year-old witch (Jamie Wood) is childhood friends with a sixteen-year-old boy (Tony Cooper). When they were younger, they got along well but one day he find's out that she's a witch. As a younger child when he tried to tell people about her true nature, no one believed him. Many deemed him crazy and from then on, he began to resent Jamie. He tries to expose Jamie's secret, but it never succeeds, and he continues to be crazy Tony that lives down the street. Jamie has always loved Tony and tries to continue being friends with him even though he out rightly shows resentment towards her. Shenanigans proceed with Tony's schemes into exposing Jamie. As well as issues arise in Jamie's world as other witches begin to hear that Tony knows about them.

(This story is in the works as a webcomic)