Re:premature ejaculation
Hi there,
Your situation is more common than you may realise.
I would suggest exploring something like tantra - it may seem totally off centre for most people, but I've SEEN it help countless couples in not just prolonging pleasure, but creating deeper intimacy in the whole relationship.
Not sure where you're based exactly, but I know of this one place, called the Tantric Temple where you can go along with your partner and do a course/session which provides you both with some understanding and tools with which to explore this way together, or if you prefer to learn techniques and take them home and surprise your partner, then that's also possible.
The Tantric Temple is based in West London tantricmassagelondon.net, however they are also the UK head office of the International Institute of Tantra so check out their site too, so just follow their link for more info on what's available wherever you are. At least you can trust with these people that the work they are doing is sacred and not sleazy... and I warn you, VERY SERIOUSLY, there are many places now that dress up their services as tantra when they are nothing more than happy-ending facilities!
All the very best in your journey.