If she is married but pregnant from someone else?

I know this might be wrong but the person i am seeing is still married and has 2 kids and she wants to have a baby with me i do to but she is still married but seperated nothing official through court but just seperated because of unhappiness with the person she is with for a long time, shes just living there... show more I know this might be wrong but the person i am seeing is still married and has 2 kids and she wants to have a baby with me i do to but she is still married but seperated nothing official through court but just seperated because of unhappiness with the person she is with for a long time, shes just living there because of her kids but stay separate., if i get her pregnant can her husband take away her kids, i love her kids too and they love me but can he take them away from her if i get her pregnant or wat can happen? Please help
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