Orgasm in both sexes is when you reach your climax and your muscles pulsate.
For a Man this is usually combined with ejaculation of seminal fluid.
For a woman, it can be accompanied by discharging fluid, known as squirting, but for most women their climax , orgasm, is accompanied by the vaginal muscles contracting rhythmically 6 or 7 times.
Some women don’t squirt when they reach orgasm and some do. Hope that clarifies it.
Ask him what he likes, he may like hair there. Who knows?
But as a general rule, if he cleans up for you, you should do the same.