I’m very upset and so is my wife. I’m 46 and healthy. I can get an erection just fine when I masturbate. Sometimes I also wake up with morning erections. But during sex with my wife, I’m having real erectile dysfunction. Sometimes I don’t get hard at all. Other times, I get it up, and then lose it. I love my wife. I find her very sexually attractive. And I’m not having an affair. But she wonders if I love her, if I’m attracted to her, and if I’m cheating. Help!