1) First you talk to her whether she wants to continue with this marriage or not otherwise you will not happy in future life just forcing to her to stay with you. If you file case in court for annulled it will get you and her, because marriage was soleminzed by parents wish and forcefully.
2) Or you can file complaint against that guy under Section 497, but only in adultery case it can be filed.
The Indian Penal Code, 1860
To understand the legal position of India with respect to the extra-marital affairs, it is important to understand the position of the Indian Penal Code, 1860 (IPC).
The IPC in the Section 497 states:
Whoever has sexual intercourse with a person who is and whom he knows or has reason to believe to be the wife of another man, without the consent or connivance of that man, such sexual intercourse not amounting to the offence of rape, is guilty of the offence of adultery, and shall be punished with imprisonment of either description for a term which may extend to five years, or with fine, or with both. In such case, the wife shall not be punishable as an abettor.
Therefore, if you are the husband, and your wife is having an extra marital affair, you can take no action against her under this section, or for that matter, any section of the IPC. Yes, this is what the law says, only a man can be punished for adultery.
Then what remedy are you entitled to? As evident from the aforementioned section, the only person who has a criminal liability in an act of adultery is the man who has had sexual intercourse with your wife, if he did so with the knowledge of her being married or had reason to believe that she is married.
3) Or you can take her to counselor one day and have talk regarding this, see what counselor guide you both after listening to you both, than take decision on point 2 of sec 497 of IPC.