I may have something to add here. I'm in my mid-30s and have been married for over a decade. My wife came very close to cheating on me/leaving me, and really the only thing that stopped her was she was extremely fat. All she could get away with was doing things online with guys while using other women's photos in order to hide how fat she was.
The only reason I didn't divorce her was our children, but after I accepted my situation I wanted to improve my marriage. We tried counselling, and therapy. I genuinely wanted to fulfill her needs because I was raised to believe that women were inherently good, and that if you give them what they want, they'll be happy. Needless to say I was raised by a single-mother.
Anyway, after I caught her on more than one occasion falling back into her old ways (creating fake profiles on dating sites using pictures of other women to get male attention), I told her that I was tired of her bullshit. I installed tracking software on her phone so that I could read her texts, social media, and phone calls whenever I wanted. I did the same to my phone so it would be "fair" (I've got nothing to hide), the app can be found here if anyone is facing a similar issue: [faggot link removed]
Anyway after her initial meltdown, I told her that I wasn't going to put up with her anymore and she could leave if she wants. I didn't care if she got the kids and half my money. I wasn't putting up with it anymore, and it was my way or the highway. I expected her to leave. I was prepared for her to leave. She didn't leave though, but said she was sorry, and we haven't had a problem since. Our marriage is actually better than ever, despite being married for over a decade. I went from not getting laid for weeks (sometimes once a month), to having HER initiate sex about twice a week (we both work, or it would be more).
Once I established my authority and demanded obedience, happiness and order followed. This all happened before I learned about Manhood Academy, but it's given validation and context to what happened to me, and I hope my story helps someone else.