Rk is still unable to understand himself properly which is making him restless n now MAdhu's rude n strange behavior is making him more n more restless...courtesy of Sultan bhai.So he also can't help it!
Sultan is helpless for his son...hw would never bring Madhu back unless Aryaan needs her.Remember what the old man said in previous epi...he is taking risk of his own life by going to city...even also in broad daylight! If anybody recognizes him his life will be at stake along with his son.But he is doing all this for his son Aryaan.
So,none can be accused for their behavior.Everyone is acting according to their character n its natural.Madhu always had this caring mother-like nature,we have witnessed how she took care of RK after the shooting incident.If she can do this for a heartless(apparently) egoistic person whom she used to hate earlier then y can't she do the same for a little kid??
Both Sultan n Rk are grey shaded character...roughness is their identity but we know they have a beautiful n caring heart also...which they never shows to others.
So guys stop bashing the characters n enjoy the show...
P.S. I made this post not to criticize or advise anyone so plz don't attack my post.Ifu don't agree with my POV then say it politely not making it a battle-field!