Condoms can make you last longer, try "long love" brand. Stop pounding the p*ssy non stop, slow & deep stroke her breh. Take a break every 10-12 minutes, suck on her titties for 5 minutes then go back to stroking. Go balls deep then pull all the way out then go balls deep again. Sex isn't a race for the swift, 15 minute porn scenes take hours to film. Those porn actors are on pills when they rabbit fukk and take 5 minute breaks between takes.
Also, don't cut off ya dikk tip at birth
Lift weights, exercise, drink water, try to build your stamina, try edging.
Average session should be about 45 minutes then take a 4-5 day break
I'm sure when I popped out the womb I should of said something about that.