feeling care for your wife's family member is normal , i dont find this special bcs i see it daily in real life, husband do care for wife's family ,for wife's sisters aka their saali ji 😉
but fighting for self respect of a step mom i have never seen especially wen you r deeply hurt by your father's second marriage bcs your mom suffered alot ,cried alot n you was so affected by this mistake ki you promised yourself ki you will not do anything wrong in your life...that one woman who gave this much sadness to your mom , deep wound ,standing up for that woman shows your strong character.
not only this he warn his step brother ki if he talk with yuvi next gaal tumhara hoga, mahir is such gem of a person ...he clearly said one thing " our step mom '' mom was key word here so he knew mother should be respected no matter wat.
it shows jo respect he shows to polomi it comes from his heart , he dont do it to show ppl ki he is good person ...i have seen many ppl who respect on face n address same elders with name behind their back bcs they show fake respect.