A sexuality in which one's sexual attraction changes over time, sometimes on a day to day basis, sometimes over the course of a month, depends on the person for the exact time. In labeling, one might just say they are flexisexual, or put another label for their main or most common attraction, or even put a label for the range their attraction goes through
"I thought she was hetero" "she was yesterday, now she is a lesbian, bet you anything she'll be all over guys again tomorrow, she is flexisexual, her attraction changes over time"
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