Want to file a case against my wife and her bf (external affair & cheating)

I got married in March 2018. She left home to her native place without saying anything & after contacting her, she said, have some personal problems & will solve it and will come back soon, but even after 1 month she didn't came… we known she had an affair at her native place with a guy and that guy is taking advantage of her problems or situations or may be any block mailing her… I don't know what's her problem? I asked her so many times, but she didn't even said any word… I & My Parents took her back with a hope she will change, but not… it happened couple of times, and 3rd time when she left we checked her wardrobe and found that she already got married to a guy called “A”, and he got divorced with her due to her external affairs & she moved to other place & had another affair with “B” and got pregnant and obortioned. After she moved to another place & had another affair with “C” and this guy and its continued… Now, I want to file a case against her & the guys for cheating me.