This is why you always eat pussy until she comes first, that way she's always guaranteed at least one orgasm and then you're free to last as little as you like. If you manage to get a second orgasm out of her while fucking, even better! :D

Option B is to just pop some stimulants first. Adderall makes sex feel amazing and gives you the stamina of a porn star.

Or do what I do and do both. That's a guaranteed three orgasm minimum for her unless you're just really bad at sex.