Mon Ange Gardien, Mon Amour

Evelina has harbored a secret crush on Gabriel, her father Theo's best friend, since her teenage years. When Gabriel returns after being five years away, Evelina, now twenty, can't stop herself from hitting on him. Gabriel is also in love with her, but this love comes with a price, for he is actually an angel, and is not allowed to love a mortal. He falls for her, and he falls.