Dating for the shy
In all social species with pair-bonds, females are attracted to evidence that males display a chance for power in the community.[…]Humans compete less for territory than for rank.
The popular and charismatic guys, the ones who threw parties, led the sports team, etc.
And the fat stores around the hips are used in the later stages of pregnancy, allowing a woman to survive to have the baby and breastfeed it in our past when food was scarce.