There is no reason to discuss your life outside of work with your employer.
No reason.
I am afraid this could open up a world of problems for you. They will be keeping their eye on you and God forbid they see you in public at a concert or festival. There have been a half-dozen times in my one year of sobriety that I had to shop for a party or holiday and yes, this included buying alcohol for my non-alcoholic family and friends. It was usually just as simple as getting a phone call on the way to somewhere and people asking me hey would you pick up a bottle of _________. Can you imagine somebody and see me at the store? A coworker if they knew about my personal life?
I strongly suggest keeping your personal life separate from your work life.
And if your boss asks about your life outside of work, you could say really anything. This is because when we don't drink we do lots of stuff sober including walking the dog, washing the car and going to movies.