Just rub one out yourself about an hour or so before meeting her. See if that helps? I used to cum in under a minute when I just started being physically active with ladies, doing a quick wank before worked wonders. As I got older I learnt to control.
Also, Google kegel exercises for men ;)

I don't think OP necessarily suffers from actual diagnosed PE or ED.
I once experienced what he means - it is shock! Your body just deciding "you know what buddy, this SP is too good/hot so we done here" hehehehe.
Worried you switch SPs, and realise there is nothing wrong, you need a whole hour to cum, go back to hot barbie doll, pop LOL you cum as she starts blowing! Some women on here are just that good at their work & hot!

Thanks to all who gave me advice much appreciated

Visit this SP. I found her to be insightful.

www.esa.co.za/escorts/viewEscort.php