Am I in a controlling / toxic relationship?

I've been seeing someone for the last 1.5 years. Things started out amazing, he was almost too good to be true. He was everything that I ever imagined in a person, he was intelligent, sweet, caring, and generous. He encouraged me to move in with him about 4 months into our relationship. I would say, it was at that point that things slowly started changing. It started very innocent really, he just always wanted to be with me he would act sad when I wanted to spend time with my friends or family. When I would spend time away from him he would call me many times on my cellphone. As time went on he seemed to wedge himself between me and most of my friends. However, he made a great impression on my family and my parents adore him. There are so many things are are red flags to me I think it might be more useful to just bullet point what is scaring me about the relationship - * When he becomes enraged he breaks things *When I visit a friend he insists on having their home phone number (in case he needs to call me there - keep in mind he has my cellphone number) * He is capable of a deep hatred toward others * Whenever we argue it is ALWAYS my fault * when we do argue he attacks my character calling me "stupid" etc. * He becomes upset when I do community theater, because he says it takes away from our time together * I feel like I'm always walking on eggshells because the slightest thing can totally set him off - I mean ANYTHING* He deleted my Facebook and Myspace profiles * I found out that he was secretly snooping in my e-mail * He often "opens my mail by accident" * He conspires with my mother - they call each other on the phone which I think is extremely strange... Lastly, he has become so entangled in my life and I'm virtually completely dependent upon him. I am living well beyond my means because of him... We live in a place that I could never afford and I'm driving a car that he pays for... I'm even on HIS medical insurance. Last Friday I just had enough, I snapped. I packed a bag and headed to a friend's house. I called him on the phone saying that I wasn't happy in the relationship anymore and needed some time to think. He was very angry, asking me 100 questions about where I was and who I was staying with. I came back to the house this morning to tell him that it is really over... that I can't take his controlling ways anymore. Unfortunately, he some how manipulated me into thinking that it is MY PROBLEM. He said that if I found him to be too controlling that he will change and he went on and on about how much he loves me and that we should salvage this relationship. My God, just reading what I'm writing is making me feel sick. How can I stay in this? Please someone, just confirm my feelings that I NEED to get out of this relationship running. Thanks in advance!