Annabella Mayfair was born in Riverdale and had lived there her whole life. She knew everyone in the town and everyone knew her. She and Kevin had been friends ever since she could remember. Somewhere along the way each of them has realized something monumental. Kevin realized he was gay and Annabella realized she was in love with Kevin. Annabella obviously realized that she had no chance with her gay best friend and that lead her to form a grand plan. She was going to seduce Jughead Jones and get over her feelings for Kevin. No feelings, no heartbreak. Right?