Welcome to SR, premedbails. You will find a lot of support here. I'm so sorry you are going through this, but I am glad you found us.
You definitely made the right decision. Alex is no longer the man you fell in love with, and there is a good chance he never again will be. Alcoholism is progressive and if he doesn't seek help, it will only get worse.
You are very young and it's a shame that at such a young age, you have been exposed to the truly ugly side of addiction. You don't deserve that...you deserve so much better. I hope you will stick around here and read the stories of others who have been through what you are dealing with. There is so much wisdom and support here.