Hello thanks for asking You are a young male with a lot of psychosexual problems. I will go to your problems in detail in serial order- - You have mentioned that your semen leak out during casual romancing (touching, hugging or sitting close to your girlfriend). See this is not semen but precum that comes out of penis during arousal. This is lubricating fluid secreted by seminal vesicles and this fluid is usually free of sperms. So there is no need to worry for that. This is not semen. - You have also mentioned that semen get ejaculated quickly even immediately after penetration. This might be occurring due to intense arousal and poor sexual experience. Premature is common problem and fortunately it can be treated by simply psychoeducating the patient. If relaxation and psychoeducation don t work then medicines like Dapoxetine helps in delaying the time of ejaculation. - You have also mentioned about masturbation (Hand pumping ?). Masturbation is completely a safe habit and it is not associated with any sexual side effects. There is no reason to have guilty about this. - It is the level of erection what maters and not the size. Size of penis during flaccid state is nothing to do with sexual life or power. I hope I have solved all your queries. Wish you a good health. Thanks