There are many questions I’d want to ask her. Real communication is critical here.

Why did she cheat? Why does she want him to stay in the picture? In what capacity will he be in the picture? How does she want you to be involved with her and what will be your relationship role with the child?

You have options, and say the one you want is that you and she stay married, you have the baby, and the bio father stays pretty far out of the picture. That is something that should be discussed and agreed upon right now. I do understand why she says she wants this baby as it may be her only chance to have one. If you talk to a lawyer, you may be able to arrange with the bio father that you are to adopt the newborn, which makes you the legal father?

This is a heart wrenching and difficult situation.