Dean was leaving. He passed basic training his junior year of high school. Graduation was in a week. He had eleven more days with Cas before he was sent out to the base in Arizona. Away from Cas, and god knows for how long. The worst part is, Cas still doesn't know. Dean may or may not have told him that he spent two months over the summer and his unbiological Fathers farm in Oregon. Dean and Cas have been together for six months now. But the second Cas finds out he's leaving and that he lied about it too, Dean's not so sure Cas will stick around.