Nature of Partner

Hello Dhananjayji
 
 i have read this Answer and past answer on marriage relationship or limitation on sexual-activities after getting one or two child. but the problem is there when our partner demean or wants to further Act or for enjoyment or for satisfaction of her demand so how can i or we convince on BRAMCHARIYA or what is purpose of sex. today we seen that in our society 90% modern women or lady have lost of passion or urge on sex with his husband. they treat love is equal to sex. so how a normal man can select or detect a taste of woman or features before marriage to solve this problem after marriage. plz give reply because i don't want to do in such activities after marriage.