Will I ever get over this pain..or will he ever change?

My bf of 3 years was arrested for DV( domestic violence )..he has a drinking problem really bad and we were arguing for the last 2 Mont's.....However I know he bruised my arm and he has a drinking problem ,but I can't get over the pain that I feel inside...Its like I'm still in shock..( this happened last week on wednesday )He is still in jail and I put a restraining order in place because I think that we need to be apart......I;m devastated...I love him ( still so much ) and I put so much love and effort in to the relationship..also we were living together..what should I do with his stuff? Gosh I never had this much pain in my life.....my trust is gone..my fillings are hurt and my heart is broken beyond repair...I'm in my 30 ties..so I'm not so young anymore....Has anyone gone trough this and actually got better?