Context: I'm a recovering alcoholic, have been in AA for 10 years. I'm completely comfortable with being around people who are drinking in pubs, restaurants or at weddings, others' houses. It really doesn't affect me at all (unless they are so drunk that they become boring ....).
However, I don't have alcohol in my house. My household is, and has been for the last 21 years, DD 21 and me so nobody else is really affected. I'm not a massive dinner party/entertainer so my friends and I meet for coffee/drinks, they come round during the day - no problem.
A few days ago I cooked a meal for someone I've known for a few years and have been seeing for a few months. We've generally been out to eat, he's always had a couple of drinks and is fully aware of my history and of all the above. I was therefore quite surprised that he turned up for dinner with a full sized bottle of wine. I was surprised by my own reaction too. I did most of my drinking in this house and I suppose I must see it as an alcohol free zone.
I don't know if I'm being unreasonable. I'm fine with being told that I am. I haven't mentioned this to anyone in RL. I know that plenty of friends in AA have partners who drink at home, but I've never been in that situation.