He was a doctor and you were fighting a boxer and one day you noticed the doctor getting pale because he was a vampire and you knew that you quickly came up to him looking at his pale skin. He tried making you back away, but he almost passed out because he needed blood him in time you bit your lip, making it bleed and then kissing him to feed him the blood, he kept pulling you in because he wanted more blood 

He was a doctor, but he only worked there because he needed the blood. He was working there for a very long time until you became his patient. One day he was checking up on someone else and he was drinking a bag of blood and then you walked in.