Ex wants nothing to do with me & I'm pregnant

Here is my story. My ex Skylor and I have known each other for years and begin dating in 2011 we have always had a great relationship where we helped each other in need and always picked each other up when we were down. We lived together threw out our entire relationship and a year and decided to have a family together. I had gotten pregnant Jan 2013 and unfortunately lost the baby a month later, ever since that time we had tried continually to get pregnant again. We were finally successful in our efforts and found out I was pregnant in march 2014, a little over a year later. We both were thrilled, we picked out names and went shopping for baby clothes. He couldn’t stop gushing to friends and family of his excitement and he babied me threw the process. I started getting sick a lot and not able to keep up with household duties anymore so we both agreed it would be for the best to quit my job and stay at home for the remainder of the pregnancy. Threw this time I admit I gave him attitude and was snappy towards him for no reason whatsoever and I pushed him away. I just wanted to be alone in bed most days bc how bad the pains have gotten and I suppose I pushed him away from me. One weekend he and I shared with his family out at a cabin on a lake and it was the best, we all BBQ, fished, swam, and had an all around great time. When we got home that night he told me I was his perfect woman and couldn’t wait to marry me. A short week later he gotten really distance with me, not answering his phone and barely talking to me at home. When I asked him what was wrong he said he couldn’t do this anymore and he simply wasn’t happy. I pleaded with him to work it out for the sake of out family, and he said he couldn’t stay. This was July 2014 and I was 4 1/2 months along now. He moved out the next day and into his mothers and we stayed in contact from there. I was a wreck, I’d call him all hours of the day and show up where he was just to try and talk things out with him and it only drove him further away. He eventually changed his phone number and blocked me on internet sites just to avoid me completely. I was left there alone moving into a new home, starting back in school and looking for work. I got so depressed I ended up in the er a few times for malnutrition because I couldn’t stomach any foods. During this time he started talking to one of his old friends he had known for several years and they started a relationship together a little over a week after we had broken up. He would be at her parents house everyday and he picked up a few new habits like drinking from dawn to dusk with her. He told his family he really likes this girl that she and him fit great together and have no issues when he is around, and the reason he drinks is to numb out everything going on around him. What he tells me about her is “she makes him really happy and they have nothing wrong with the relationship” What I have been told by his family from words he has said and some of her “closest” friends is that she is lazy, doesn’t cook, clean, cannot hold a job, drinks everyday and only dates men for their money. I do not know how true any of this is but it is what I’ve been told from my valid sources. Okay on to the fun stuff that has happened, I had hacked into his Facebook and email accounts to see what he was up to and I keyed his car because of how angry I got over the situation in general, mind you not my best moments and he found out about it all and ended all contact with me completely. His family and him also gotten into it because of how much he said he wanted this life and then bailed out of it, so he ended all contact with them as well including his mother. He moved into her parents house and wouldn’t talk to anyone anymore, no visits, nobody has his phone number or even address to reach him. I finally gotten ahold of his new girlfriend which I call his “rebound” because whether or not they have known each other for years, a week is way too soon to be with someone else. I asked her kindly if he would be willingly to meet me to talk and she agreed to tell him and made plans to see each other. When we did meet he was being the normal ass to me just acting mean the whole time, he eventually lightened up when I talked about the baby and joking around and we made plans to meet up at my place the next day. Well he came over and we had sex and he told me that he still cares about me but it isn’t enough to be with me. This charade keep going on with us quite a bit he would meet up every week behind her back and sleep with me an stay a half a day to hang out. I know this isn’t right to do to her but I couldn’t help trying to win him back and having him in my life. Also he got a chance to see my new paid off house and all the new things I bought, crib and etc while he was living at her parents. Now we are talking a month and a half into our break up and he came over last Sunday to hang out while she was working. He acted completely different than usual, kissing me, cuddling and being affectionate. He told me he loves me and know we will end up together but is confused by what is going on. He basically said right now he doesn’t know what he wants but he does know he wants to try things with her first and see what happens. He gave me his number to reach him and still will not get ahold of his family, he said he disowned them for good. But then him and her got into an apt and started getting everything they need. Ever since Sunday a week ago I’ve not heard from him or seen him since he moved in with her. I contacted him threw text last night to see if he wanted to visit this weekend, I got no answer. I got so upset I texted again and said why did u use me” Still no reply and I said I deserve an answer from you, he finally texted me back stop!!! So I didn’t text again because that’s a telltale sign he was upset. All in all I know this sounds like a messed up situation and I shouldn’t want him but he’s the father of my son-to-be and the love of my life, I know he is just running away because he is scared and using her as his crutch but I need advice about it all. I want to know if you two believe his new relationship will not work because of everything and if he truely does care about me an if maybe once the baby is here if he will straighten up and come back for the better good of things” Any help at all to this would be great, thank you so much