Fuck, orgasms chased off my libido

1st of all pumpkin seeds taste gross!! i do find that if the blokes gone on for too long and ive orgasmed and cum alot i just want him to hurry up and finish! i supose its just because im worn out by then!! i also go through stages of being a horny minx to a nun and as im not on any pills it must be down to normal life changes!