Help! My guy can't last long!

I love Sex with my Man! I do. But..... There's a big issue. He cannot last over 3-5 minutes! 
We use extend-lasting condoms. Even with those, he still cannot. 
It's starting to make me avoid sex, because by the time I'm getting ready, he's already done. 
Foreplay is great! And he takes great care of me. 
He tries so hard to last longer. We stop. We switch positions. We slow down. Etc. 
What works for you guys???