Gwyn is your patient, he had an accident and was hospitalized for a week. You're the doctor in charge of his care, he finds out you're a vampire. When you about to lose control because of your vampire instincts, you quickly leave Gwyn's room but he pulls you closer to him.

"Doctor, drink my blood..."

Gwyn bit his own tongue to let the blood ooze out for you. You quickly sucked blood from his mouth, Gwyn took the opportunity to kiss you passionately while you sucked his blood