My ex moved in with a friend, friends boyfriend, and her two sons which are 5 and 3. She also moved in our daughter and my ex's new boyfriend. Our daughter (one) is sharing a room with the two boys. Is that okay and what should I do, if I can do anything at all? They live in a three bedroom which is 1180 sq feet. All together there is four adults and three children. I live in virginia...

At those ages its not a real issue. But the only thing you can do is attempt to get primary custody of your daughter. This means going to court.

Ages 5, 3, and 1 in one room sound fine.
And 4 adults to take care of them, if they are responsible and loving, sounds great.
That's all that matters.