Are you sure that whilst sharing a room they are gonna reach some level of understanding? What if they spend all their time squabbling over petty issues? I think it will take some external factor or one or two big kaands to make them understand each other and unify them.
Today imlie still understood Aryan at last scene, why he done all this ?? What would be the reason??
Not only sharing a room, it's how they stand for each other outside their bedroom..what their goals and what they want to do ?? Exploring physical comfort. After marriage both have rights on each other and both are on a position to answer each other - on a employee and friend zone, you can't cross certain line.
Slowly they will understand each other and like you said they will get some push to realize and express their feelings towards each other.