Luckily, with lots of practice, that can be extended. Well practice as well as some things to help. Look into condoms, especially "Extended duration" with the desensitizing lube, to help control what he's feeling and let him last longer. Just make sure he puts them on lube side in or it might not be so pleasurable for you.
As well, and this is something I have really learned, foreplay. Lots of it. Him on you style. Prolong the happy and intense feelings so that when penetration and intercourse comes along everything is already in a happy fun place and the quick shot isn't really noticed.
One of the important things is to not call that much attention to this. It will get better, but you have to be patient and accepting, it is a huge male ego thing.