I keep having sexual dreams, but the weird thing is, I don't ejaculate in my sleep. I just get a erection when I wake up. I'm 20 years old. Is this a normal part of puberty?
It is a normal part of being a male. All men have erections while sleeping. The average man has four to five erections during the night. The erections coincide with the dream cycles of your sleep.
We can't control the content of our dreams, but since sexual feelings are strong in young adult males, it is not surprising that those feelings influence our dreams. Essentially you're having a wet dream but without the ejaculation. My guess is that it is because you are already keeping your semen levels down through masturbation.