Hi MiniMimi,
I know this is going to sound bossy, but I am speaking from years of experience (my own, my three sisters, and numerous female friends) -- you will never be able to trust him. Living with a drunk is a nightmare, and you need to put what is best for you first. If you don't: you will not be good for anyone.
Pack all his stuff up -- and arrange to have someone take it to him. Block his number, change yours, block his email, etc.
Write him one last note, letter or whatever and tell him that you have done this and that he needs to give up. He should stop wasting his and your time -- that too much has happened and that you may be able to forgive one day, you will never be able to trust him, and without trust there cannot be a healthy relationship.
Suggest that he get some help, and I recommend that you also seek some professional counselling as you have been a victim of abuse and need to sort out the reasons why this happen to you, and also to help you deal with the fall out from it.
Be strong, and remember to value and respect yourself -- if you don't no one else will.
MinnieMel