Once the baby is born, it won’t be just you and your guy that need sleep, the baby will need sleep too. IF the baby is woken up by them fighting, you won’t be too happy. If it were me, I would call the cops on them, next time they fight in the middle of the night. That’s just inconsiderate and inexcusable on their part. If they want to live that way, they should rent a house where they won’t have to deal with disturbing anybody.