There's nothing you can do to change her mind. It's time to face the fact she doesn't love you and it's time to divorce her and move on with your life. You did all you could to hold the marriage together. Your wife didn't do all she could to hold the marriage together. You've been through this before in your first marriage, and it's familiar to you. You have already learned you can't change another person, you can only change by and for yourself. You took the chance on having a long marriage, and this is the second time you made the wrong decision and married a woman who you thought would love, respect, trust, and be with you for the rest of your life. One never knows if a marriage will be forever, but one must take the chance it will be and work toward that goal, not as one person, but as two people seeking the same goal. That goal being to work on the marriage together and make the marriage strong, rather than only one person working on keeping the marriage strong. I will throw in something you may not have considered. Your wife may be going through menopause and is dealing with feelings she's never experienced before and she's not communicating her feelings with you. Women going through menopause don't often think or act with a clear mind. I know of this as my first ex-wife divorced me during the time she was going through menopause and six months after the divorce she told me she made a mistake divorcing me and wanted me back. The damage was done and I found a new girlfriend and we married a year after the divorce with my first wife and were soul mates for 32 years, until her death due to natural causes. We worked on our marriage and it was the second marriage for both of us. Our working on our marriage paid off as it's very rare for two to become soul mates for 32 wonderful years.