It sounds as if emotionally, you have already become a bit intimate with this other man. Close your eyes and picture you life with your husband in 10, 20, 30 years from now. Is that what you want? Do you have children? Grandchildren? Is the romance just gone out of your marriage? I would think after over 30 years of marriage, you would try and spice things up before just bailing because the grass is looking greener on the other side...
I'm thinking 'bout how people fall in love in mysterious ways, Maybe it's all part of a plan, Well, I'll just keep on making the same mistakes, Hoping that you'll understand--Ed Sheeran