Living with an Alcoholic

I'm new here...I joined today because I've been looking for some kind of support system. I have two children and work full time, so finding an Al Anon group isn't really an option right now. I've been with the same man for seven years....Up until about a year and a half ago, he was what most would consider a functional alcoholic. Then he was fired from his job because he'd spent time drinking in the evenings rather than preparing lessons or grading (he was a college instructor). Then he received a DUI, and since then there's not been a lot of "functioning" going on. I can't do it anymore, and I have told him as much. Since then, he swings between begging me to give him another chance and monitoring every single conversation I have with anyone else. I have deleted my social media accounts because it was too stressful trying to convince him I wasn't doing anything wrong, but now, somehow, he has access to any notification I receive. When I'm not feeling guilty for abandoning him, I have panic attacks because I feel like I'm constantly being "listened in on". Not sure what to do at this point, so I thought I'd start here.