Premature ejaculation is something that can be hard to define.
For some it will mean simply climaxing prematurely and before you partner is able to do so or get near to her own point of orgasm.
For others it can be more extreme and can be used to describe a situation where you will climax within a minute of so of penetration or even during foreplay.
Either way, it is going to be important for you to find out how to control ejaculation if you are someone who suffers from this problem.
The first thing to do, therefore, is to practice self control.
It may not feel like the case, but you have control over your body and not the other way around.
You therefore need to practice by masturbating so that you are able to control the release more effectively.
When you masturbate, simply get to the point of orgasm and then stop.
Keep repeating this as much as possible.
Soon you will be in a better position to control yourself during real sex.
You should also make sure that you use condoms during sex.
If you are someone who does not do this then you will find that by putting one on you are able to reduce the sensitivity on the penis and this will be able to last longer.
If you already wear condoms then find one that offers additional protection and thickness.
You can also get ones that are able to offer a de-sensitizing agent inside as well.
You should also try to become a more selfless lover.
If you are someone who jumps straight into intercourse after she has been playing around with you during foreplay then this will lead to quicker ejaculation.
Instead, you should aim to focus on pleasuring her a little more and bringing her to orgasm as well as yourself.
If you do these things you should find that you are able to last longer in the bedroom.