I've learned to really enjoy all the other feelings around sex not ejaculating and that has given me a whole new lease on the act and my partners have really, really appreciated that I don't go for 5 to 10 "cum and done".
There's tons of methods of training yourself out there. Just Google around. It really helps when dates are thinking if they should keep dating you.
And yes, sex isn't everything but good sex sure does help and it's an intrinsic, important part of coupling.