He is responsible for his own choices. Don't be so hard on yourself ... you made a considerate and thoughtful decision to show him you can go out and have fun without alcohol ... too bad he didn't realize he could do the same thing.
Most of us discover that having a social life with our alcoholic partners becomes a form of torture ... filled with disappointments and unhappy memories due irresponsible drinking. I remember far too many embarrassing incidents and friends that were lost due to these episodes. My AH and I eventually only went to places that did not serve alcohol. So many of us eventually just give up ... and end up staying home rather than endure the misery a night out could bring.
Socializing with your friends may be your only option at this time.