Men's primarely function is spread their seeds. If you wondering why he act this and that way, he is always searching to seed. Some guys appear different. They are caring genuin but they are basically the same. They all want their seed spread as much as possible. It's just that thier mother is not allowing or they are just acting. What they dream of is make this girl pregnant and move on. Girls want relationship that might give them something from guys. But when you think of them in thier nature, there is nothing to get from them but his baby.
Dawson's Burrowing Bee is one of the largest bees in the world. They live in Australian desert. They fight to get female and when the mating season is over, there is no single male left because they are all dead while they fighting. So, female raise their young alone.