@Green Witch,
Do a google search of "Cycle of Domestic Violence". You will find a pattern that directly matches what you are experiencing.
Symptoms of
just one part of the cycle include the following : jealousy, pushing your friends away, pushing your family away, separating you by physical distance from family and friends, lowering your self esteem through any of the following :
-stating you could never find another man, no other man would want you
-stating he's the best thing that ever happened to you
-belittling you
-telling you you are a slut / worthless / can't do anything right (usually a very big one) / demanding that things be done for him (meals etc) / complaining you can't keep a house clean (when he doesn't do anything to help)...
Note : this sort of thing is only one part of the cycle - look it up.
Basically that part is all to make you believe that you are dependant on him, and to instill fear in you (both of what he would do to you, and what you would experience if you left him) to prevent you from leaving him.
You will find that you have been changing who you are so you won't experience his behaviour...and due to this, you will have fallen into the habit of making excuses for his behaviour (with the reasoning being, you didn't behave in the correct way to avoid his behaviour...which thinking is exactly what he wants)
Again...look the cycle up.