Any tricks to not cream your pants during your first time??

Im going out with a girl and its getting serious. I think maybe to the point where it'll be my first time. Ive heard stories that the first time is really intense, to the point where you cream in your pants before it even begins becuase of anticipation. Ive heard some tips like right before you do it go to the bathroom and cream yourself so that youll last a lot longer during the actual event. I think I might do that if it happens. Any other tips??