You're smart enough to realize where the depression is coming from and what steps you can take. You are prolonging the pain and moving backward when you talk to this XBF who is in jail/prison/etc. You are giving him power (and paying for it with your hard earned $$).
If you stop drinking, you will start thinking rationally. You need to seek help for yourself, you don't want to lose the ground you've gained. You need to realize that you have opportunity in front of you, education, CHOICES and the chance to be HAPPY. Booze and the addict BF will steal this from you and grind you into the dirt. Don't let them do this. don't be a doormat. Please turn you back on the losers and remember how hard YOU have worked to get into graduate school. Be the smart woman....