I intercepted a 5 page letter my wife of 20 years wrote to her old boyfriend. She told him that she loved me for the man, husband and father I am but will 'always but always love him'. She said to him that she can't 'give herself to me 'totaly' because she still loves him so much'. He lives across the country and seldom comes home to visit his family. I don't think they have been intimate physically but it's obvious her heart belongs to him. What the heck should I do?