Hi, sorry for what brings you here.
First of all you might want to have a look at the stickies in this forum, in particular this:
https://www.soberrecovery.com/forums...c-reading.html (Classic Reading)
This will give you a good overview of alcoholism and you will no doubt find some similarities in the stories you read that have been posted by others.
I know it's hard for you right now, you are no doubt feeling very hurt. Please resist the urge to send that email right now. One day at a time, 15 minutes at a time even, resist the urge to contact him. It will do you no good.
He is not only an alcoholic, he is an abuser. Under what circumstance is it ok for someone to try to trap you? Under what circumstance is it ok for anyone to put their hands on you and leave bruises? There is NO circumstance where that is ok.
For now, it is probably best to try not to contact him and if he contacts you ignore it. You have been dragged in to an abusive relationship and you need some time alone to get perspective.
Have you told anyone else about this, friends or family members? If you do have people you trust, let them know, discuss it, tell them what he does, don't keep it a secret.
You may also want to look at attending some Al-Anon meetings for face to face support and of course keep posting here.