Double standards, girls and girls help!?

for some guys theres no meaning on having alot.. some dont care.. but some do. for girls we wait sumtimes. since we are the ones that can get more hurt in the ual part. we get some things that guys dont care. we can get pregnant. and guys would just leave you..guys dont think they have any duty to the girl after. girls feel upset that they left and want more of a relationship that 5 min time