If Aarman understood the required private space between the husband and wife he would not be there and if Ridhimma had the courage to tell Aarman to back off then she would have told him when he was man-handling her.
But to think of it even If Riddhima would have told him to leave or not man-handle her (which she has) he would not listen cause he is stubborn person who is also overtly confident that he knows it all and would always do right only Unfortunately he terms it as pyar dosti etc etc etc