I recently just got through a break with my lady. We're back together now and everything is as ok as it's going to get.
But from my experience with the break, I was just like you. Heartbroken, miserable, and drowning in alcohol. But then eventually that turned into some serious anger.
During the break, I used that time to figure out if it was even worth being with someone that made me feel like shit. In the end, I gave her another chance.
If you ever wanna talk, hit me up. I have a little bit of experience in this area and I'd be more than happy to help.
Peace, bro.