How do you keep your boyfriend hard?

Answer 1

There is a thing called a cock ring that will work to keep him hard. You might also want to try giving him oral sex before he enters you. Each time he ejackulates with oral sex there is a good chance he will stay harder longer. There's also a thing called Chinese Brush, no man can loose an errection with that stuff. If there is a china town where you live go there they will have it, but be carefu not to apply too much as he won't be able to go soft for over 4 hours.

Good luck