I was just trying to analyze your situation. The main thing you should be clear is you can cheat anyone in the world but not yourself. So speak you yourself very transparently at first. About your wife: You are just trying to continue the traditional bond with her. You want to be fine with your relatives because Nepalese culture wants to see you with your wife. In one way you are just using her but if you ask yourself from inside you are just having a formal relation with her. You love the upcoming child (who don’t like child in this world). About your girl friend: You like her at present (Am not sure of future). It’s obviously fun to go around with a girl coz u have less commitments to her at present compared to your wife. It’s human nature to flow in lower way as water. Major things to consider: 1. You wife is very sincere to you but you are not. It will be fair to let her know about your relation and broke with her rather than keeping her in dark. As I have mentioned earlier, you are using her to maintain a traditional bond in Nepalese culture. 2. You wife loves you as you are now. The girl loves you coz she has lesser commitments to you as of now as you have to her. If you formalize this relation later (after breaking the current relation); will you be equally have fun as you are having now? If your answrer is YES to issue no. 2 - Then yes, divorce your wife and go with this girl. (dare to handle the intemiadiary stages) If your answer is NO to isses no. 2 - be strong to break this relation with the girl. If possible explain the issue to your wife mention you lost your way in between and beg her forgiveness. Be a decent husband. Last Suggetion: Look for sustainable solutions…rather than short term ones.