In addition to sexual desire, the motivation for romantic love runs parallel in having an evolutionary function for the survival of a species. On an emotional level, romantic love satiates a psychological need for belonging. Therefore, this is another hedonistic pursuit of pleasure. From the evolutionary perspective, romantic love creates bonds with the parents of offspring. This bond will make it so that the parents will stay together and take care of and protect the offspring until it is independent. By rearing the child together, it increases the chances that the offspring will survive and pass on its genes themselves, therefore continuing the survival of the species. Without the romantic love bond, the male will pursue satiation of his sexual desire with as many mates as possible, leaving behind the female to rear the offspring by herself. Child-rearing with one parent is more difficult and provides less assurance of the offspring's survival than with two parents. Romantic love therefore solves the commitment problem of parents needing to be together; individuals that are loyal and faithful to one another will have mutual survival benefits.