RK romantically singing "daadi amma daadi amma maan jaao" to Madhu was a shock for many of us. Toh let's see one of the possibilities why he wants to sing this song π
Madhu is mad at RK for two reasons:
1) He came late for breaking Madhu's fast
2) After that he is gayab from RK mansion
Madhu: Bittu my lallu where is my patidev ? Mein us ke peeche despo ki tarah ghum rahi hoon aur woh janwar bhaag gaya. 
Bittu: Bhabhi my sweety aapke liye ek surprise hai. π³ Chaliye mere saath.
Madhu blushed. βΊοΈ Alteast Bittu ji is there to care for her.
Bittu ji then took her to a farmhouse and disappeared from there. She tried to find him and landed in a room decorated with flowers and candles.
Madhu: Bittu ji ne yeh sab kuch kya mere liye.
Angry RK came from behind.
RK: Bittu ji par bas haq hai ek mera Biwi. Us par line maat maaro.
Madhu: Toh that was the plan? You gayab for organizing this and Bittu ji bringing me here.
RK: Chalo achcha hai RK ke saath reh kar you became smart.
Madhu: If you are doing all this for maafi I am not going to forgive you.
RK: Toh maat karo as if I care.
Madhu: When a patni is naraz pati should maanofy her with a romantic song and you are rude to me. Mein jaa rahi hon.
She started walking away from there when RK caught her hand and pulled her into his arms. He looked at her and with a smile tried to kiss her cheek but Madhu stopped him.
RK: Daadi amma daadi amma maan jaao, chhodo ji yeh gussa zara haas ke dikhao. Chhoti chhoti baaton pe na bigda karo, Gussa ho toh paani pee liya karo, khali peeli aapna kaleja na jaalao. π²
Madhu angrily pushed RK for calling her daadi amma... RK pulled her closer again and turned her then kissed her neck from back.
RK: Daadi tumhe toh hum maana ke rahenge, chahe humein maaro chahe humein dhamkao. π²
Sharmake she ran to the bed. RK pushed her onto it and jumped on her. π²
RK: Haasi na chhupao zara aankhein toh milao, daadi amma daadi amma maan jao. π² π
Madhu smiled and kissed him.
RK: Bas mission maanofy successful ab aur kuch nahin hoga mujhse. Bhagwan ke liye don't try to lootofy my izzat. New entry aa raha hai, use pakdo jaa kar. π
Madhu: π³ π³ π³
I know nothing like that will happen but I would love to. RKbala fans will get their romance and RK fans their kameena RK. π