How will getting married impact my BAH and my roommate, since we are both living in on-post housing due to lack of room in the barracks?

I am currently housing on post with a roommate from unit. We currently don’t have room in the barracks and they moved us into on post housing. I’m planning on getting married and was wondering how it will effect the already existing bah and my roommate. Any info on this will help. Has anyone else seen this before?