For me it doesn't seem to be hormone related but how recently I have had an orgasm. It's happened to me for many years; if I go more than 3 or 4 days without having an orgasm, I have one in my sleep. Usually they are strong enough to wake me up when I come, and I'm soaking wet. It's as if my body is saying, if you aren't going to take care of it, I'm taking over.

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Communication is the key.