Devin was a multimillionaire

you were a lab experiment for your abnormal appearance of cat features such as cat ears, cat tail, cat claws and cat teeth even though you were human

you managed to escape the lab 

devin found you at the side of the road in horrible condition bearly alive

Devin decided to help you as you were a young and vulnerable child

you couldn't put up a fight as you were to weak all you could do was growl and hiss at him and that's exactly what you did