Dear Sir, I m 25yrs old. I’m not married. I have a big problem that I quickly discharge in my pant when I meet my girlfriend & only kiss her. I can’t understand that what is this problem. I have a problem since 3-4 yrs. The position is same till now. My sperm is getting out & mood is changed when I discharged, so please help me. Is there any problem or what? I am so confused.

Your problem is Premature Ejaculation. You should do Kegel’s exercises to overcome this problem.
Both men and women have a pubococcygeus muscle, you have to keep this muscle in tiptop shape in order to maximize your sexual experiences. Try stopping your urination three times just to ensure that you understand where the muscle is located. Feel your anus contracting (pressure). Always try to keep your other muscles (thigh, back and abdominal) relaxed.
Quickly clench and release your PC muscle for a 10-second period — take a 10-second break. Perform three sets, then take a 30-second break.
Clench and unclench for 5 seconds with 5-second breaks in between — 10 times in a row.
Tighten your PC muscle for 30 seconds and release for 30 seconds — 3 times in a row.
Repeat the first step and you’re done for the day.
If you do this exercise regularly, your ejaculation time will improve. In addition, try to masturbate regularly and holding ejaculation while doing it.