Why is there always one crazy lady in the last rounds of the bachelor?

The
producers rigged it

The bachelors
like crazy ladies

Background:

posted 02-20-2012 by joshuatitsworth

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I'll admit it, I've watched the bachelor from time to time with my wife. And one thing I've noticed is every season when it gets down to the last round there is always one crazy lady left. My question is, is it rigged or has every bachelor on the show have a thing for the crazy ladies.