My wife and I have a mutual friend that I adore, and really enjoy being around. Do yo think this is o.k.?

I am married. We have a mutual friend, a woman, who I think about lots. In fact for a few years now. When the phone rings I hope its her. When there is a knock at the door, I hope its her. If a get a text indication, I hope its her. When she eats with us the food tastes better. I laugh more. She makes life so much more better when she is over. I enjoy her being close by so much. Is there anything wrong with this?