First, Im 3.5 months sober.
My girlfriend is the number 1 reason I quit drinking. She didn't like it, and I hurt her one night by drinking too much. I would often drink on my way home and hide it with gum. Id drink more beers than she knew about, even when she was home. Id pound a beer or two while she was in the shower. If I ran some where, id have a beer. She knew I drank alot, but doesn't know truely how bad it was. I didnt do this to hurt her, It was just me wanting a fix. I would never intentionally hurt her.
Sounds like you are battling a real alcoholic. Try not getting mad at him. He has a serious problem. Try encouragement, and be proud of him if when he doesn't drink. Trust me, it helps when someone is proud of you.
He is lying to you. The breath test is working. Sad that he has to do that, he has a problem. If you think you love each other now......wait till he is sober. It gets way way better. Keep on him if you really care.