Ha!
"Dean's driving force has always been his devotion to his family. He puts family above all else. We knew that no matter what his connection was to Lisa, or how wonderful she was, or great the sex was, it's about family. For Dean it's not about wanting to be with Lisa as much as it's about wanting to be part of a family unit." (Sera Gamble)
Let me enjoy my I-fucking-told-you-so-moment for minute. Thank you. ;)
you can find more here but careful, it's spoilery!