Okay here's some advice from someone who's just very recently been there. I had felt the desire meeting a man at a friend's birthday party who paid me a lot of attention and made me feel extremely desirable. I didn't go through with an affair, but it concerned me that I felt that way. I am not saying this has happened with your wife at all, but I will soon get to my point and this was part of it. Your wife is telling the truth, but please try not to take it too personally or let it hurt you. If she didn't love you, she would've moved on and not talked about it with you. After this happened to me, I realized and told my husband that I still looked at him and knew that he was a very attractive man, my friends told me so, etc. But that I didn't feel the physical attraction anymore. It made it easier for me because my husband was also feeling this way. But we love each other and would do anything to save it. Whatever you do, do not consider swinging. This is the sad choice we made, and I got pregnant to another man and recently had an abortion. For a while before this happened, it did bring the fire back into our sex lives. Mostly because we saw each other as more sexual again. Sometimes, that is all it takes to get a woman revved up. Not the swinging part, but something that can make her feel sexy. For me at least it was this way. It is hard to feel sexy when you have kids and job or the house to care for and just all the demands of daily life. Maybe it isn't so much that she sees you as just the father figure but that she sees herself as just the mother figure and it translates into a lack of sexual desire for you.My advice to you would be if you could afford it, to treat her to a day at a spa, relaxing massage, nails done, pedicure, haircut and color. Let her get a little makeover. Then take her to a store, let her pick out a sexy outfit, and take her out to a romantic dinner. Be sure to tell her that it is because you realize she hasn't had a break lately, and been pampered. In no way let her think to herself that it is because you don't find her attractive, or it would backfire. I hope this makes her feel sexy and you have an amazing time!
