Sounds like you guys both enabled each other to drink. It's probably put a light on his own drinking. He doesn't sound like a real friend, just a drinking acquaintance
I don't think it's selfish to put ourselves first when alcohol is involved! But, I do believe we need to be unselfish in other areas of our lives tho. Alcoholism is selfish, we indulge for our own gratification, disregarding others, sometimes at great expense. Worry about your family, not your drinking buddies, because them types will come and go, keep the ones who love you close
good luck to you!
sicknote.
ps. I'm UK too! down south