Its a Quarter After One Im All Alone....(And Happy Hes Leaving Now!)

Just got into a huge argument because my Ex is extremely annoying. He is the biggest antagonizer i know (besides my little brother) i was explaining to him how i dont want to be in a relationship and how i am still upset with having him around after everything he did to me while we were together. When we were first dating he lied to me and told he his family lived in Deleware Okay...So every monday and tuseday he would go and visit his "family" turns out thats his quote on quote family was a girlfriend!!! how did i find this out?? we were on a date and at Clydes in chinatown having a amazing time taking pictures...i went to look at a pic of us on his phone and went to zoom in and saw a picture of a naked girl that was taken the day before our date. BUSTED!!!! I dont know why i stayed with him but i wounded up continuing the relationship and got screwed over 2 other times...I was furious a few months ago when he got laid off his job for yelling at a dishwasher lol. He had gotten the keys to open up a new resturant in DC i was very proud of him when he told me the news and told me he needed a pastry chef (so i was going to take the job) the next day he goes to work i get a call at 2am and he is Drunkkk. Explains how he was at the resturant and was at the bar after his shift and the owner hands him a drink. booze kept flowing all night and then the next morning he gets a call saying how he lost the job and the keys to owning the place. I WONDER WHY???? 20 min later i go to get on my facebook and i check my messages. i had one from someone i didnt know and saw he was talking to his friend about his ex of 4 years!!! that is when i realized i was on his facebook and i had to read into it because he was talking about how he got fired and i had to figure out why he was talking about his ex in the same message...(sorry i was nosey but i had to do it) turns out he lied to me! his ex got him the job and the keys to the place he wrote that he missed her and how he isnt happy and how the whole night he wanted to have sex with her and he has been texting her all the time wishing he could be with and spend more time with her...drunken thoughts is a sober mind. anyways i explained how i am not happy and how i still have this as a problem expecially with being a new mother carrying his child. all he had to say is your a horrible person who can never let anything go. yes i am a person who cant let anything go when its effecting our future with trying to get along with eachother for a baby. i dont think he deserves to be in the childs life because of  it and because i am not happy. yes he is working and helping me out but i seriously cant deal with being unhappy and upset. then he EXPLODED! i walked out of the room twice telling him to leave and to go home and he refused. i locked myself into the bathroom and he still wouldnt leave so i called my uncle and was about to call the cops because he was yelling and being crazy at 1am...so finally he left after a half hour and thank god my Apt didnt make a noise complaint or anything. sooo tireddddd goodnight xoxo