Castiel was only human for a short amount of time. There was so much he never got to do. IE:Build a snowman with his favorite humans. This is a cute fluffy one-shot kind of Frozen-ish

She's just one virgin out of billions. What does she matter? But she's different. Lucifer tried to think like the Devil he is but your innocent eyes sparkling brighter than the stars made him feel. That's right. FEEL. You saw light within his darkness and love with in his hatred. You saw an angel who needed to be loved.