I read details that you wrote about your wife. Why do you feel that your wife is cheating you ? You say that you are loving your wife very much. But I think, you do not love her 100 percent fully.
You feel that she is your asset and what you want she does accordingly. It is not full love. Full love means indepence, happiness. What your wife is doing ? Just enjoying. If u love someone and if she/he enjoying, will you not feel happy ? You love your son/daughter. What you want ? They enjoy fully in their life.
But why you change your measure in case of your wife ? Because you feel, your wife is your property. If you love her fully you never encroach on her freedom. Does she neglect any household work or her duty towards you or your kids ? If not why you are punishing her ? Only for she is enjoying with other men ? It is an outdated orthodox mentality. You asked still she is not confessing her guilt.
Think, how a wife tell her hubby that she is doing so. She feels ashamed to you. Life is meant for enjoyment. Dear friend, just change ur mentality. You feel very happy that ur beloved wife is just enjoying. You should feel proud of her.
Samething happened in my life . I did sex several times with my boy frnd without the knowledge of my hubby in his absence. When he knew it he became very angry with me, scolded me a lot. But just after someday he realised his mistakes. He told me it was his great mistake to scolded me in this way, you are fully independent to live ur life according to you.
But l cleared and said l never keep relation with that guy. Then he requested me a lot, begged pardon for his scolding. And later he invited my bf to our home without my knowledge and told me that "l have given a nice gift for my beloved wife, please accept it". I got surprised seeing my bf with him. My hubby said it is my gift to you, keep it n enjoy life fully as u want.
Since then he always feel proud of me. Now we 3 enjoy fully. So my dear friend, just change ur mentality, love ur wife and give her full freedom. Then only you see the real love of ur wife.