TBolt nailed it with that one. "Love is blind" is such a true statement. I had several folks warn me about a girlfriend once, who later became my ex-wife after cheating on me and running off with another guy. Its one of those life-experience lessons-learned that you never get until after it happens. And it hurts. But, you learn, grow, and move on. Just to give you fair warning, though...he'll probably need another steadying, calming influence in his life...introducing him to a new circle of friends when he gets out will definitely help with this, too.