I have a very close friend whom I love dearly. (Though I'm not going into that mess. My loving her is not the issue.) I've known for years that this fantastic woman has a hard time reaching orgasm. In the last year we have had two sexual encounters, during the last of which I discovered that not reaching orgasm can be just as painful for women as it is for men. To me this will not do.
So early this week I started looking into reasons why some women have difficulty reaching climax. (I've been discussing it with her as well.)