The guy I liked got another girl pregnant. What should I do?

I liked this guy for sometime, but besides hooking up in the beginning and then a couple of dates, we are mostly friends who talk. He recently told me that he got another girl pregnant. He says he still has feelings for me. I am very mature about this and being a supportive friend. I haven't said any of the things in my head, just been objective and supportive. But it is so unfair. I feel extremely stressed out about this situation. I care about the baby more than him now, and what a sad situation for a child to enter the world this way. It is his ex that he says he doesn't love. The thing is, at first I was shocked. Now I am angry. He had told me he didn't want a relationship, but was obviously sleeping around this whole time he was talking and flirting with me. I think he was being extremely selfish and immature and now what a mess. He asked me if he's off my list because of the baby. The thing is, the baby isn't the problem. I love kids and really want a family, and it would be worth it, if the guy was. I just feel like after all of this, it seems like I should move on and just forget him, even though I am a good friend and a strong woman. It's just a lot to take and I don't want to be put in between. It seems if he ever gets it together it will be a long time, and I definitely won't wait around.

Thoughts? Guys..Why sleep around like this and cause multiple people such heartache. Its so unhealthy!

Feeling very down about this.
The guy I liked got another girl pregnant. What should I do?
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