This sentence can only be understood in the context of the Indian arranged-marriage system.
Our system is based on "girl likes boy, boy likes girl." The Indian system is quite different. It is based on the parents' opinion as to how similar the families are. Are they like us in caste, wealth, social standing, etc,?
Young prople who are facing a match that they find distasteful may be able to escape it by posting such an extreme message e.g. if you force me into this, this is how I am going to treat my partner.
I agree with everything you have said. I was thinking of the traditional Indian context of rural life. The majority of Indians are still rural. But you are certainly right that things are quite different in the big cities of India.
The sentence that I posted was the part of the conversation between a couple a girl and a boy. That boy is saying that his ego may come between them after marriage. That girl is asking him to get married to her.
It sounds like his ego has already come between them. Is he saying it's going to get even worse?