Well, on the one hand everyone (men and women) like to say "you are only as old as you feel". When I am having dinner with a girl half my age, I certainly don't try to act like her boyfriend - even if I will be undressing her in a few hours. I'm not thinking much about myself. I am about as introspective as a kid riding a roller coaster.
As far as I see it, you gotta grab it when opportunity presents it. Life is not a dress rehearsal and this contrasts sharply with my views ten years ago.
Too bad the above is written in Engrish.