I was so ignorant of how the female orgasm was produced, that the first time I fucked a woman, who was also my first wife, I expected that she would easily cum just from having my dick rammed into her cunt!
But I soon learned that the CLIT was the center of a woman's sexual pleasure, and that mere fucking did not usually stimulate it enough for her to come to orgasm. One of our favored positions became for me to fuck her from behind while she masturbated her clitoris. That way she could manipulate her own orgasm.
Then after she "came" I could get into position and fuck her until I came too. It was always my motto then, and still is: "Good guys finish last!" When I am fucking a woman, I consider it my number one job to help her have an orgasm, in whatever manner it requires.