Dog won't sleep in the dog house

First Blue Healer I had, had never been in the house. Got really cold, and my ex felt sorry for him, and brought him in the house. laid out a horse blanket for him, and he never left it, until we let him out. Another I had, wouldn't go in the doghouse either. Brought her in the house one time when it got really cold, and I thought she was going to tear the place up, until I let her back out. She did not want to be in there.

I brought him in the house last night and tonight, bought s new doggie bed for the room he sleeps in, the only problem is i can't let him out and give him free reign of the house, i also have to be very careful about where the other big male i have that has always slept inside.Everytime i walk by the closed door i can hear him wagging his tail, oh well, at least he's safe and warm.