Are there any legal ramifications for sleeping with your ex boss's wife?

I had a horrible boss for almost a year, and I got a new job with a new company last November.  In January, I met his wife at an event (and the ex boss wasn't there), and I hooked up with his wife that night.  The wife did not know who I was, or if she did, she didn't mention it - and she never mentioned her husband, and didn't wear a ring.

I want so badly to email my boss and tell him "your wife was good in bed" and attach the selfie I took of us at my place, proving that we met.  I really want to get back at him.

I'm wondering if there are any legal ramifications.  His wife and I were 2 consenting adults, and I'm fairly certain she didn't get pregnant.  If this causes them to divorce, could it affect me in any way?

I'm not worried about professional consequences - my current boss (the owner of the small company) knows what I did, and he got a good laugh.  I'm also not worried about the ex boss coming to hurt me - I'm prepared for that.  I'm lastly not worried about destroying their marriage.  The wife was a willing participant too.