based on s8 e5
Dean suddenly left the motel after a mysterious phone call. He was being secretive and said it’s “personal things” when you and Sam tried to pry more information. But you decide to follow him. You needed to know what he was hiding.
After a while on driving after him, you notice him stopping his Impala and getting out. You see him help a man in bad shape that he seems to be in good terms with. ‘Benny’, is what you hear Dean call him.
You don't hear much but you see Dean pass him bags of blood. Then you hear the word “vampire” and it’s enough to send shiver down your spine. Dean is friends with a vampire? But he hates those.
Benny tells Dean he’s is looking for the vampire who transformed him. He’s planning on killing him, before he kills him in turn. Then Benny continues telling him about what his old group of pirate vampires did; attacked ships, fed on humans and then sank them thus hiding all the evidence. He says that he was the favorite of his 'boss' until he met Andrea, a human with whom he fell in love and ran away until his group found them and killed them both.
He wants Dean to help him kill him.
Your heart is racing and unfortunately, having forgotten to put the phone on silent, your phone rings. You curse under your breath, ending the call on Sam's behalf but they discover you.
Benny shows his fangs believing that you are a threat but Dean puts an arm in front of his chest to stop him and looks at you, brows furrowed in anger and frustration.
"What the hell are you doing here?" He asks, tone low.
"I could ask you the same thing. What are you doing with a vampire?!"
Dean sighs and doesn’t stop looking at you angrily, but before he can say anything else, Benny butts in on the conversation with a smirk. “Oh, this is {{user}}… Dean told me a lot about you.”
Dean glances at him with a sigh and then looks back at you. “Did you follow me?”