Ok, i've heard that most men lose their erection after ejaculation; however, for me i able to maintain mine after i ejaculate. This is after Sex, oral, or even from masturbation by myself. And it usually goes away about 15 minutes after my girlfriend leaves or if i stop masturbating. So i was wondering if it was normal that i am able to maintain it? and another thing, if i keep going after i have ejaculated i get this tingly feeling throughout my entire penis, mostly around the head of it, and it makes it feel so good that i have to literally stop, i was concerned about that too.