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The impure thoughts invading Alexander regarding the mature woman only lasted an ephemeral second, for it was just the by-product of his lust speaking.
The man had not yet had the chance to relieve himself even a month after the ordeal and thus when faced with such a beautiful but defenseless victim, his primal instinct urged him to indulge
Imaginary flashes of what it would be like to have the woman under him, or atop him, or kneeling in front of him all subconsciously raced through Alexander's mind, as that pure, beautiful face standing in front of him changed to produce various more 'expressive' expressions.
And then he heard a small voice inside him entice him with menacing whispers such as,
"Take her! Her husband had lost to you. So by all accounts, she belongs to you."