Are you a girl or just a proxy interested in one of the affected parties or their detractors? Under the Hindu Marriage and Divorce Act, no man can have more than one wife. Both of you can be hauled up under the law. If you enter into live-in relationship, your children will be considered as born out of illicit relationship. Even if the gentleman’s wife likes you, she will be sotheli maa for your children and may hate them. You may have been encouraged by what many of our heroines have done. They are not hauled up for bi-gamy for one of the following reasons. (1) They will be influential and law authorities will not dare to touch. (2) Their second marriage would not have been as per one of the legally recognized procedures. As their second marriage is not valid, they cannot be hauled up under the anti-bigamy section of the Act. (3) They will nominally convert to Islam and get married as Muslims. Under the Shariat Law up to 4 wives are permitted.
Under the Government Servants’ Conduct Rules, a male having more than one wife living or a woman who marries an already married man, whose wife is still alive are not eligible for Government jobs. Probably this Rule is not applicable to MP’s, though they are also considered as Government Servants for the purpose of other laws. That may be how both Hema Malini and Dharmendra could become MP’s
You are 26 and he is 37. His wife may be slightly older than you. Both of them are still in the prime of their life. Have they already lost interest in s*x life? As they have already 2 children they may be practicing family planning by abstinence. Hence the husband may be full of excess energy. Also who will not like it, if one were to get a younger wife? But you are not married. Can you not get a younger unmarried man?
Now let us come back to your first question. Most often a second marriage goes unchallenged, because no one complains. False or true, your father can make complaint of abduction or under the Hindu Marriage Act. As regards abduction you may be called to the court and asked whether you went on your own or abducted. If you say you went voluntarily you will have to answer further questions. Whether they would be embarrassing or not would depend on how you take them. Your common husband and co-wife can also be called to the court and the opposite lawyer can ask them uncomfortable questions.