Most Helpful Girl
Dump his ass. Let him rot in his misery of losing you because of his own idiocy. Your relationship is broken. You can glue it back together but nothing will make the crack go away. You may be miserable being single but you'll be even more miserable in a relationship where you can't trust that he is where he says he is or he's with who he says he's with or he's doing what he says he's doing. Alcohol or no, he cheated and it can't ever be fixed.