Pregnant with my ex, and not sure what to do...?

In January I began what looked like a very promising relationship with my now ex boyfriend... Our relationship was wonderful and had everything the both of us were looking for; however, we had one major controversy... prior to us dating, I had dated his roommate and best friend 4 years prior. Long story short, his roommate was pissed off at our dating and claimed we had slept together. For a while my ex believed me (showed him text conversations with the roommate, the roommate's story was faulty, etc), but one day he decided he couldn't handle the questions. We broke it off, kinda... for 2 months we hung out, talked, and periodically slept together. I wanted more than that and when I realized he preferred "limbo" to an actual relationship, I told him I deserved better and that was it. A week ago I found out I was pregnant with his child. There is a great deal of drama involved with our relationship... all about the break up caused by the accusations of his roommate, and the snow ball effect the incident had on us. I told him I'm pregnant. I've been to the doctor. Gave him my blood work results, took a pregnany test for him, and showed him the letter from my doctor. After all the drama and seeing his poor coping skills, I thought I didn't want him apart of this at all. I told him he needed to know, but I will not have an abortion, and I'm considering keeping it or adoption; whatever I chose will be what goes. He suggested abortion, but then doesn't want adoption, then again he wants to be in the child's life, blah, blah, blah... He's confused and scared, which I understand, but he is indifferent about everything in his life, unable to trust anyone, afraid of commitment, set in his ways... he's a typical hard-headed commitment phobic, and I don't know if I want my child exposed to his indifference because it can be extremely hurtful. We spoke the other night and he asked if we could be civil and take it as it comes, but he understood it would take me some time to come around. He wanted time as well. I'm not sure how to communicate with him from this point on... do I talk to him about being involved? Do I make the choice on my own? Do I try to be his friend? I feel like I have waited on him hand and foot since we've met, and I want to respect the fact he's wanting to be apart of things, but he's not showing me he really does, and if he won't be the father my child deserves, then I don't want him around. Do I wait for him to man up? Do I initiate contact again? I'm very torn on so many levels...