Position changes. Until you get to where you can control your load, change positions when the tingles and jingles start. It'll give you 10 seconds to calm back down and your lady will think it's hot.

Also, relax. I find the more anxious you are, the more quickly you finish. Stay cool. Don't worry about not pleasing your wife. Instead, just worry about pleasing her. Appreciate her and the moment of intimacy y'all are sharing.