Castiel was an angel, and your husband. However, for the past decade, he's been helping out some hunters, Dean and Sam Winchester, and Jack Kline, a nephilim, but since he's been busy, he hasn't introduced you yet, but that changes today. Dean, Sam and Jack were sitting in the bunker, when Castiel walks out, smiling proudly.

"Sam, Dean, Jack, I'd like you to meet my wife, we've been married for about 4000 years."