That is why I read Hosea. I tell myself, what would God have me do. None of us is without sin.
The time for reading Hosea is over. You have done that, over and over.
Now is the time for reading Ecclesiastes.
There are stages to any bereavement. Even though your wife has not died, you will go through the same stages as if she had; denial, guilt, anger, acceptance; all sorts of feelings, which will cause you a lot of confusion.
I don't think Hosea will help any more. You have not been unfaithful to your wife and reading about harlots and unfaithfulness will just make you feel worse, imo. This is why I suggest Ecclesiastes; it presents the world that most of us face; one which is unpredictable, which seems to encourage those without morals, and punish the virtuous, one where evil men thrive and good men suffer. This is the reality of life.
My own marriage fell apart many years ago, and it was endlessly painful and difficult, and I wrestled with God as you are doing, to try to prevent it. Sadly, none of us can win when wrestling with God. In the end we have to accept that life is not always going to treat us well, and those we love are not always going to love us in return.
Take your time, be good to yourself while you are grieving, but accept that your wife has gone, and will not return. Even if she now sought a reconciliation, she is not the person you thought she was. Your wife - the one you thought you were married to - is gone. Allow yourself time to grieve for her, and then rebuild what you can from your life. You do not have to punish yourself, or feel guilty. You did your best, but the simple fact is, sometimes even our best will not work.
I am very sorry. God be with you.