I've just read through your messages and I'm so pleased that you are distancing yourself from him.
I've been there. I've experienced the lies, the deception, the fact that drink always comes first, the excuses, the promises that are always broken, the gifts when he's feeling guilty (I hated those gifts - they represented him letting me down, and they told me he thought I could be bought with 'stuff', so he could continue treating me badly), the fact I knew our relationship wasn't as important as his next drink, the not knowing what mood I'd come home to, if he'd do something emmarrasing in public, never being able to rely on him.
My ex DH became alcoholic many years into our relationship, and after children came along. After MANY years of doing my best to help, once I could see how damging his addiction was for our children, and me, I struggled to get away from him, with all that entailed, but never regretted it for a second.
Be grateful that you don't have ties to him and extracting yourself is straghtforward in practical terms - presumably no children or mortgage, or family links (sorry if I've read wrong). Put yourself first. If you are with an alcoholic person, the drink will always come first. They will promise to do better next time. They will blame you for not believing them that this time it's different. You will never know if they mean it, if they will even try to give up, if they will success, if they will go back to drinking just when you thought things were getting better.
I'm not saying that it's impossible for an alcoholic person to give up the drink. And it's great if people around them are strong and resilient enough to support them through it. But that is very different to knowingly entering a relationship with someone who has lied and deceived and put alcohol first, and doesn't appear to be making any attempts to stop.
In the end, it ground me down. I was a shadow of my former self. I lived on my nerves. I couldn't trust my husband. I lost all respect for him. My children saw their father turn into an unreliable, drink-focussed person.
Don't let this man drag you down with him and his addiction.