Sounds like something you dreamed, surry. Sexy, but impractical as most doctors wouldn't do a vasectomy on a 19 year old. 
))) But it IS perfectly normal for an excited husb and to cum on his wife's pussy before sex and then be unable to penetrate her. All guys have had that happen once or twice, I'd guess. And the idea of an older man having sex with our young wife and impregnating her - it happens all the time. When my girlfriend and I were both 19, I was still a novice at pleasing a woman but she was teaching me how to go down on her and bring her to orgasm after I fucked her. She needed this as I was cumming very quickly at that age (fortunately, getting hard again very quickly) and not bringing her to orgasm with my penis in her. Then one night after some cocktails, she shared with me that she'd learned about how men can give a woman oral sex from an older man. The older man and his wife used my wife as a baby sitter, then when he took her back to her apartment after the babysitting gig, they had sex. That's how she learned and she was teaching me. I was erect as she told me all of this and she must have thought I was perverted. Little did I know she'd started meeting him in motels for sex on a regular basis. That kind of scared me as I was afraid that 1) I was losing her, and 2) she might get pregnant with him and blame me. ))) It was pure angst, as I loved being able to have sex with her and didn't want to give that up (it wasn't all that easy to get laid at age 19). A few months later, she jilted me, and said she was engaged to a guy in the marines. She eventually married him and they are still together today. I bear her no ill will - she taught me a lot and it was at some risk to herself as we never used protection of any kind.
