Sexual desire for a long-term romantic partner may be linked to increased desire for alternative partners, according to a study published in Human Nature. Traditional relationship science posits that sexual desire enhances relationship maintenance, reducing interest in alternative partners. However, evolutionary perspectives suggest sexual desire might not be partner-specific. Instead, desire for one partner may increase overall sexual motivation, leading to heightened interest in both the romantic partner and potential alternatives. Traditional theories suggest sexual desire for a long-term p…