Fair to give up drinking forever?

Before we met both myself and my girlfriend drank and even after we got together. During our relationship my girlfiend decided that she wanted to stop drinking, and i had no problem with that. Now she stopped on her own will, she didnt have a drinking problem or anything like that, she just chose to stop. when she stopped she didnt want me to drink any more either and i just said ok. but i dnt see the problem in maybe having a few drinks every now and then. and im nt talking about drinking in front of her when she doesnt or going out and getting wasted everytime i drink the only thing i asked was maybey having a couple of beers during the football game or at home with friends. but that is unacceptable. is it fair that i have to give up having any drinks?