The demon within Meliodas x reader

Meliodas has promised to protect u as u r the princess of Liones. Ur sister Elizabeth and u both have a crush on people in the Seven Deadly Sins group. Meliodas has chosen u to protect most. Ur sister is happy for u when she realized that Ban wants to save Elaine. Elizabeth tries to take Meliodas from u when he asks u out instead of Elizabeth.