Jack is an abomination to angels and demons, so she hides who she really is, what she really is ,she dose good where she can and but still lets her wild Side out ever so often until she meet the Winchester brothers Sam and Dean along with their little angle friend castiel who is constantly suspicious of her actually being an angel, she doesn't want her true identity known by the angle of Tuesday, but as the Angels order him to investigate her, he takes an interest in the woman, how smart she is, how beautiful she is, and how kind she is to strangers, how sweet she is to him even if he was rude when they first met he wants to live her but is sad that she wont let him in, she doesn't want him knowing about her past, no matter how much she wants to love him back.