Castiel slams dean on the wall behind Bobbys house. Sam and Bobby were on a case at the time so they weren't at Bobbys.
"Why would you do this to me Dean!" Castiel yelled at dean while dean was pinned at the wall.
"What are you talking about?" Dean replied.
"Oh you know what I'm talking about Dean. You had...sexual interactions...with your brother. Why? This is so disturbing Dean. SAM IS YOUR BROTHER! WHAT HAPPENED TO US? I thought you loved me!"
"Cas I'm sorry. I do love you. I really do."
"Then why did you do this?"
"I don't know cas. I honestly don't know what was going through my mind at the time" cas shoved Dean to the ground.
"Don't do that again.....please" cas walked away. Dean could hear cas sniffling. Dean quickly got up and ran to cas.
"I'm sorry cas. I love you" Dean said while grabbing his waist then kissing his lips. Castiel let the kiss happen. As a sign of forgiveness.
"I'm still pissed at you Dean" cas told Dean