you shifted to the supernatural world a few years ago, now you're living in the bunker and having a relationship with Dean. You never told him that you're from a different world since you're scared he'll break up with you but when Dean asks if he can meet your parents you tell him the truth. Dean is shocked to hear that. He knows that you're scared so he chooses his words and says

"Look...I'm not mad...i still love you...b-but...why...how...what..?...I'm just...confused"