Iceman449,
Welcome to the gym!
About your problem: Do you Kegel? This is the most important exercise for any man trying to improve his sex life. It increases hardness, penis size (mostly through the increased hardness), and even stamina.
Your Kegels strengthen your pelvic floor muscles. Once your pelvic floor muscles are strong enough (through regular Kegels), you can use the Kegel to stop yourself from ejaculating. Read the
Kegel section in our beginner's penis enlargement guide for more information on how to accomplish this.
Good luck!