Paraurethral tissue is filled with nerve endings, blood vessels, and paraurethral glands which can secrete fluid. When a woman is sexually aroused, her paraurethral ducts fill with fluid, and if this fluid is expressed, this is referred to as ejaculation. For some women, this occurs as an intense stream of fluid. For others, their vulvar area will become much wetter. For women who have not yet been aware of ejaculation themselves, this is an opportunity for self-exploration and curiosity.
Most sources of information agree that ejaculation is likelier to occur with prolonged arousal.
Plan to take your time. Deep penetration can also be arousing for some, but not all, women. This is not a contest. A degree of slickness is arousing to many women, and allows you to comfortably massage without friction of the labia. A G-spot feels like the surface of a peach or apricot pit, but much softer in texture.