Another thing to remember: With masturbation, you learn what touches work for you. A partner doesn't automatically know that, and not just any partner will do. Sometimes you get lucky, and find a partner who's able to stroke you the right way. Most that don't, are teachable. You have to teach him what feels best to you; not everyone likes the same things.

Some women need more foreplay than others, and not all men are good or patient when it comes to foreplay. If he's not willing to learn, he's not a good sexual partner.

I rarely have an orgasm with a partner, but it's happened. I do have a problem relaxing and letting myself enjoy the sex, as opposed to worrying about how to please him, but I want to emphasize that difficulty with sex with a partner isn't necessarily about something you've learned or done wrong.