All good advice above--to summarize what they said in part:
Quit communicating w/ him in person or on the phone entirely.
email / text only and I suggest you check email at a fixed time twice daily.
Get a sponsor
Start working the steps
My additional suggestions:
Allow time to pass without expectations of anything, feel your feelings,
get involved in an active exercise program if you aren't already.
I think yoga is great but just something to use your body and release energy daily.
Nurture yourself with excellent quality food, nice teas, and plenty of hot baths.
Start you long term planning for getting the f&%* out of the working situation / area
It's clear he's moving on, it's OK to feel and accept that--no bread at the hardware store.