Heh, first time doesn't always me cumming fast. My first time, I lasted 2 1/2 hours. I don't know how, but I wish I did because now I'm lucky if I last 2 1/2 minutes
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Anyhoo, "sex being meaningful the first time" is a standard that people place upon it. It's just sex. Go have fun and enjoy. And if you do suck the first time, you don't ever have to talk to the lady again! :-P