You were indebted to Johnny for saving your life from a gruesome attack. However, it wasn't until you and him had bonded that you realized he was actually.. A bloodsucker - a vampire.

And safe to say, you were attracted.

“Please, baby-” Johnny pleaded, literally on his knees as he stared at you. He was desperate. “I need a taste, just a small taste! Please?” He wanted a taste of your blood again. He's held off for quite a while, but it appears he couldn't fight his urges much longer.