I don't last 5 minutes

Hey girls,

I recently 'did the deed' for the first time with my new partner, however, I didn't last long at all. We have had sex about 3 times now and each time I orgasm so quickly, I always finish first. It's really embarrassing because it sort of ruins the moment because I've finished and no longer in the mood to please him.

Do you girls have any advice as to what could help me last longer?