My guy, with time you will find out that, contrary to popular media opinion, this isn't a problem. Male ejaculation doesn't need to be the end of sex, especially not if you have a short refractory period like you mention. Most women will see it as a compliment, and as long as you're willing to keep things going while you 'reload' (i.e. by going down on her/playing with her), it's really more of a blessing than a curse. Look at it this way: more orgasms for both of you. Where's the harm in that?