Every time i am with a girl i cum really fast. how do i not do that?

P.E. is treatable: Premature ejaculation (p.E.) is treatable with a medication. One can ask his primary care doctor about it. Part of the problem is psychological, so relaxing one's sexual intensity may help. Part of the problem is physical, so using two condoms can decrease one's sensation and hopefully last longer before orgasm. One's doctor may have additional ideas.

Try to think about: Try to think about something else while having intercourse and it is a matter of practice