Family doesn’t know my bf is in recovery

My boyfriend is in recovery. He is a drug addict. He goes to meetings a few times a week.

I met him a few months ago and he was already in recovery. Clean for over 2 years. I didn’t know him when he was in active addiction.

My family doesn’t know that he’s in recovery yet. I haven’t told them because it’s not their business and the topic never comes up anyway.

But my family is having a cook out this weekend and we are going. I know my family is going to ask him if he wants a beer or something and I know he’ll say no. But eventually my family is gonna wonder why he doesn’t drink.

I feel like my family is going to judge him. I don’t know how they’ll react. Of course I’ll stay with him no matter what my family thinks.

I’ve never been in this situation before.

Any advice ??