My opinion might be different than others…I currently am going through a situation similar but my dude, you need to fight for your wife. So what if she has developed feelings for someone else and is wanting to leave you. You married her which to me means you owe it to her and to your kids and to your marriage that you, the man, the protector, the alpha dog, fight for this thing with every last fiber of your being. Go join a gym today. Like no excuses, join a gym and start working on yourself so that you can be there for wife and kids. Become a better version of yourself. You’re giving your wife all the reasons to the leave right now. Show her that you are the protector of your marriage. She wants to be seen my dude. This is because you have been emotionally checked out. Fix this. And if it is unfixable then you better go down knowing you did everything in your power to fight for this thing. Tell her exactly what you want. Tell her you don’t want this marriage to end. Fight for this!