Why do I never have sex in a dream? ?

Dreams help us solve problems. Look like you don't have any problems to solve in the dating arena, so your subconscious mind just focuses in on something else you need to deal with. 

Although sex dreams aren't necessarily about sex, Dr. Johnson does point out that a lack of sex in one's waking life could lead to sexual dreams. The reason for this is to "satisfy physical impulses." In other words, your brain knows when your body needs a sexual

Because dreams are not up to you

You might have in the past but just forgot

cuz u too hood for it yo respresent it