My guy friend who I had known since high school and stayed tight even as grown-ups. We were always pretty open with each other about sex stuff. Everytime he slept with a girl, he would cum too fast. So we came up with the idea of having sex and i'd let him come over to my place and he could go at it for as long as he could hold out. Once we got started, I could tell my friend was getting nervous. He was clearly stressing about his performance and I was set on making him feel at ease. We talked through what we were doing and I encouraged him to take his time and enjoy himself. Slowly but surely he started getting more confident. It wasn't long before he was going for 25 minutes straight. He's definitely a way better lover now