but i don't and my view is different on this
1. if we like any one we call them ...tu, tum or by name. if one (madhu) doesn't have any connection with a person (ak), then naturally she will call aap or sir 😉. sirf apnoke saath hum haq dikadhe hai na??!! i'm like this ... so i'm seeing like this. if i don't like somebody, i will use sir, madam sarcastically 😆
2. what ever it is... ak much older than madhu. and she is from good family... so she is giving respect for his age 😉😆
if you remember madhu calling rk 1 and 2 ... the above two reasons fit well 😉😳... rk, almost same age or young and her hubby ... so she called rk ... tum and ak ... sir
understood na what i'm trying to say??!!
so here after don't get angry ... relax