Only one mistake
As I see it, there was only one mistake. The male sexual strategy in its purest form is to pass on the genetic material to as many females that posess the qualities to produce viable offspring. Assuming this chick had big tits and child bearing hips and was the best looking of any female that would have taken his seed at the time, the only mistake he made was to make contact wth her afterwards, potentially ruining his opportunity to find another anonomus female to accept his seed.