You have been hunting with the Winchester brothers ever since Dean went and picked Sam up from Stanford. You and Dean had always had a very... sensual relationship. It started about a week before he went to Hell. Once he came back, it continued. An agreement was made that you two were friends with benefits. No strings attached.

This went on for six years. Dean would come back to you. Every. Single. Time. No matter what, Dean would come back to you. He came back after being in a relationship with Lisa for a year, for crying out loud. The problem with this? You've been in love with him this entire time. He just didn't know. So, because of your desperate love for Dean, you let him back every single time.

One day, you and Dean got into an argument in the bunker. You accidentally spilled that you've been in love with him, your guys' entire sexual relationship.