Take it easy for number two. Stroke nice and gentle, bringing yourself close to the edge, but not quite to it few times before you finally reach that plateau.
Get close and think about all the time you've spent on your knees, begging for release.
Get close and think about how frustrating its been to walk away with your balls full and your dick tingling.
Get close and remember all those times I satisfied myself in front of you, getting off on your desperation.
Now get to the edge and consider the fact that you kept crawling back for more. Stop the moment you get there.