Some of us (even in jest) keep on hinting at Mukhi's lack of manliness for not trying to exert this or even want to get physical. He keeps on saying he will not do such a thing to her. It is important to note that he is not saying he will never get intimate to her but he is not try to do so "WITHOUT HER CONSENT"
Consent is an alien concept (especially of women), in a patriarchal society.
We take it for granted that love or marriage automatically leads to physical intimacy. While it is a way of expressing love, for someone who is raised in society which neither speaks about it nor encourages any physical contact (especially with opposite gender), it is not easy to break these barriers.
We as a society, keep on teaching women to keep away from men and not be comfortable with our body (let alone of a guy), and suddenly expect that they get intimate because we accepted a relationship with a stranger(in most cases, it is true).
As the concept of consent is non existent, women tend to accept it. We expect it as some kind of right which is earned by signing a form or wearing a necklace or putting the sindoor.
Attraction is present in love but in a society where we do neither allow people to act of it or talk on it, it is supposed to take a while and it is okay.
As far as teasing someone (Aru teasing Mukhi) is concerned,every couple is different and shares a totally different equation. The difference lies in the fact that it was not done with malice.