As I concern, this condition is known as premature ejaculation and it mean cum so early before you or both enjoy or wanted to cum. It happen to around 30% of man population, and most of guy just kept to them self, reoson? is due to shyness. Believe me, usually, there nothing wrong with you physically. It has a lot to do regarding anxiety, and psychologically and control technique, and the more you feel anxious about it, the more worse it get. This problem can be cure and all you need to do is to learn and train it. It is easy step by step things. Shyness and unrational won't help and medication either make you numb down there or jeopardising your body hormonal level (e.g. SSRI drug etc). here's for you and all. I've use it and it help me a lot! An investment I never regret made once in my lifetime!! Don't worry man, you'll benefit a lot from it and after you've learned it, don't be naughty ok...