Nawaoo, what marriages go through this days is nothing to write home about. Personally I am interested in you trying your best to fix their marriage if possible. Having extra Marital affairs isn't so healthy especially when children are involved. It's not all about the pleasure but about tommorw
You did well by not taking action to ruined their home but I must give you an assignment to try in talking to your aunt to renew her love with her husband
Although I don't know what the issue is but all things are possible