Not one of us here needs to read your text messages to tell you he is irrational. Being an active alcoholic means one is irrational, manipulative, and a liar. It comes with the disease, and is easy to spot once you recognize the pattern of behaviors. My therapist who I went to see after my ex told me repeatedly I was crazy called it for what it is within 30 minutes of our first session. I asked him how he could make that call so easily and quickly and he said "they are all the same behaviors underneath the facade of the person".
Stick to your boundaries. He's a grown man, he can find another place to live.