Guess it would depend on how well you knew them prior to playing. If you had just met them that night, then I would probably just shy away from playing again and risk any drama or problems in the future. If it's a couple whom you've become decent friends with, then I would probably have a conversation with her on the side and let her know you're not willing to keep playing if she's not upfront with her hubby. Either she let's him know she doesn't want to use a condom with you, or you continue playing with a condom......it's up to her.
Good luck,
Brett