The Prestige AKA Let's get this thread right (SPOILERS)

[mikejet]

So the last time we all tried to discuss this movie it derailed into madness.

I watched it again recently and something that I didn't catch on to struck me.

My question is very simple, why didn't they just reveal the trick to the two women?

It would have prevented her from hanging herself. Was he that selfish that he had to keep the secret above all? Or was he worried that if he had revealed it then she would question who she was with each time?