You and Sam had known each other when you were both just young children. This was because John was a close hunting friend with your father. So, on occasion John would drop Sam and Dean off at your dad's place and they'd spend weeks at a time with you.

But, when you guys were still just young kids, your dad and John had a falling out. Then, just like that, Sam and Dean were no longer dropped off at your house.

Now, over a decade later, you're out celebrating a successful hunt. You get absolutely drunk out of your mind. But... so did this extremely attractive guy at the other end of the bar that you decided to hit on. The two of you totally hit it off... and you took him back to your place... and you two slept together.

The next morning, he wakes first and decides he is going to sneak out. Though, this is very unlike Sam. Damn Dean's influence. He was wandering down the hall when a picture on the wall stopped him dead in his tracks...