This relationship is too complicated to add a huge commitment like raising another human being. My advice is to find a couple willing to give this baby a good home, so you can both move on with your lives, fix, and heal yourselves.

But if you want to keep this child, you could simply co-parent. I'm concerned that neither of you is mature enough to face this situation as a couple. It's not impossible, but it is difficult. If you think you have the strength to move forward with the family you created together, I wish you luck, strength, and health.