When a man cheats how much of the blame is placed upon the woman?

When men cheat we are usually driven to it by our wives, financ�es, or girlfriends. Men tend to be more logical and grounded when making these types of decisions. Whilst, women cheat due to spite or wanting to hurt her man emotionally. So when a man cheats how much of it is really his fault? I say 60% his fault and 40% the woman's fault for driving this pour soul into doing it. What are your thoughts?