I replied in your other thread as well. I've felt the same heartbreak and I'm sorry for your loss.
I'll tell you something: In 41 days sober, my life, including my social life, has really improved. If you quit drinking, you'll have many opportunities ahead to meet even better men. I know you can't imagine loving anybody more than him, but BETTER people will be in your life once you're not drinking.
FWIW, I'm not involved with AA. Try it and if it's not fitting right, try something else. Just make defeating the enemy (alcohol) your Number One Goal.