Ami,madhu had to make a call in a fraction of a second,check the limited time frame,right after the sms by dips,and her gettint the call,maybe 10 mins.And she took the call to invite him to the party to test RK too.whether he trusts her, And he failed big time.
Didnt dipali point out to him that he could have said meri madhu aise nahi karsakti,but he let his shaq and insecurity about sultan take over him.Contrast,Radhaji,meri madhu aise nahin karsakti,mujhe uss par vishwas hain.
even Sultan said that. When Madhu tell RK she didn;t ask hi to come, then RK shouldn't have insulted her. And Madhu shouldn't let him insult her.
It was important for Madhu to know RK trusts her or not. So for that isn't Sultan important to know the answer.