Hi Sonia,
Even i have faced the same thing, even my MD used to ask me for the same, i had refused him many times but he didn't improve so lately i had to leave the job.And i got married and shifted to Delhi.
Again again after my marriage that MD had open a branch office in Delhi, So my GM approached me to join it i agreed because that MD used to sit in Mumbai branch.
So before joining the company he came to Delhi and asked me to meet to discuss the salary, i went with my husband that time he didn't discuss, next day again he called me and asked me to come alone to discuss about the salary and would not be comfortable in front of my husband.
Due to this reason i had to leave a very nice company and very cooperative staff and colleagues.
So you cant help it you just need to go a step further. If you are really not comfortable search for new opportunities.