unfaithful wife

My wife carried on a full blown affair with a married military officer for 3 1/2 years until he dumped her for someone new. We struggled with reconciliation but finally found our way back to a happy, loving, fulfilling marriage for 25 years. Then 5 years ago, she reached out to him again in the form of a birthday greeting. I was devastated and trust is forever broken. We have been in counseling, retreats, a Retrovai weekend, and though we are now married 44 years, I feel very ambivalent. I never got the truth or the full story. I never met or saw him though I have recently located his picture. He at one point when I found his email and asked him "why" he pursued my wife. He told me she didn't love him but desired him sexually, physically, mentally and emotionally and she felt nothing for me and only tolerated me while she enjoyed him.

Our intimacy is non existent at this point and as retirement looms in our near future, I'm not sure I want to try anymore. She obviously still has feelings for him since she attempted to reconnect with him and has notated over 25 times in her Bible, verses that reflect upon their affair. She says she loves me but actions speak louder than words. I am at a loss. I don't hate her and she is the only woman I have ever loved. I feel indifferent at this pint in my life.