Actually for me it all started out because of the frequent masturbation habit (especially in the night, at the bedtime) and addiction to watching porn. So, I guess that the brain got used to this "natural" drug and now it happens spontaneously every single night. Root cause: depression. Have you tried out Paroxetine in order to get rid of this medical condition?
Totally agree with you! Frequent masturbation and porn addiction are the main causes.
Frequent masturbation in the night, before bedtime is the cause. Disregulation of the PDE5. So you f**k up the REM cycle erections.
So don't waste opportunity. Enjoy the chance
Whenever I see my husbands erected penis while he was in deep sleep, I pull out of his pajama, massage, suck long time till he ejaculate juice inside my mouth, then he goes to sleep.
Once a week intercourse definitely solve this