A recovering alcoholic is always better off when alcohol isn't in the vicinity. The saying "people, places and things" will lead us to a drink. Sounds like his feelings were kicked up, he got jealous, which contributes to wanting a drink. There's a big difference between someone having a glass of wine or a beer and lots of people drinking and having fun.
I suggest keeping away from situations like this. As a recovering alcoholic I can say that I wouldn't be able to handle it either....