Grace....I don't know what is in your boyfriend's mind....
In general, alcoholics don't make good relationship material....they are barely able to be responsible for themselves...much less the kind of responsibility a relationship takes....That is why they have to work a diligent program and live by the principles for the rest of their lives...
He doesn't sound like he is ready for that, from what you have shared.....
You have a right to your own happiness....
If you can't get to any alanon meetings...you can still do it online and study their literature....
Also, ask your therapist if there are any other support groups that you can join...any kind of support group would be good for you, right now.....
Maybe, it is time to work on yourself in preparation for leaving.....
If you are looking for totally painless...we always mourn the loss of significant relationships...but, it is the short-term pain for the long term gain......