How can I make intercourse last longer?

My boyfriend, who I love unconditionally, doesn't exactly have the sexual appetite or stamina that I do. He's aware of this, and lets it bother him more than me. He definitely makes an extensive effort to please me with foreplay, but when it comes to actually having sex, it's a good day to last 2 minutes before he's climaxed. We've tried various positions, including me on top so I can have more control over speed and intensityand even with the slowest and slightest of moments it's less than 5 minutes. I've also tried getting him off first then trying again in hopes less sensitivity would add some time. Any helpful suggestions would be greatly appreciated.