Bf having closure with his ex wife?

So my bfs ex wife left him for his friend when he was in Afghan. Theyve been dating for 3 yrs and married for 5. No kids.

I made a mistake by dating him when their divorce hasnt been finalized in court. Well, i just found out that before their divorce, his ex wife wanted ti have closure with him, cause she said she feels bad about leaving him while he was in afghan, and wanted closure so she wont have any guilt in her. They both spended a few hours together, who knows what they were doing together.

After a few weeks of that closure, she fell pregnant, and asked my bf for food cause she said shes hungry, and doesnt have money to buy food. I just wonder what about her bf? Like something else is going on, and hes not telling me!

Its like they both had sex on that closure, and they both think its his baby shes having. Her bf and her are still together, but hes probably mad about the closure too. My bf said its not his baby, but i feel like it might be since shes going to him for help!

What do u think?