thank you for posting your query on health care magic
I understand what you are feeling and i must compliment your courage and honesty towards your wife to have shared this major concern of yours with her.
Firstly i would like to tell you such feelings are not based on hormonal
imbalances and that this is a sexual inclination which anyone can have towards any person of same or opposite sex .So do not think of wasting your beautiful life over this .
I would suggest that you should visit a psychologist
or a psychiatrist
and talk it out with him or her.It will help you understand the process of inclination towards same sex and will help you get over this suicidal thoughts.
You are a lucky man with such a loving and understanding wife who is understanding you from the core of her heart .
So just relax and visit a doctor as i have advised you .It will be of great help
I hope i have been of some help to you and have answered your queries.
Fell free to post again if you have any further doubts