Iin: that i cum fast?

So you're saying you'll have an orgasm if you simply hold the shaft of your penis for 90 seconds?

I find it hard to believe that's true, so I assume what you mean when you say you try to hold back is that you fap away at your usual 240 strokes per minute and try to use some Jedi mind-shit to stop yourself from coming. Since it seems that your glans is very sensitive, that ain't gonna happen. For men, orgasm is a pretty much hard-wired stimulus-response mechanism, and most guys find it impossible not to come if their penis is getting enough stimulation to trigger that response.

The only way most guys can delay ejaculation is by slowing down or pausing the stimulation. Masturbation doesn't have to be just flicking your wrist as fast as you can, and PIV sex should very definitely not just be jack-hammering away as fast as you can once you're in.

It sounds to me like you've trained yourself to come as fast as you can. That's pretty common, since most of us start masturbating in situations where we know we could easily be caught by parents or siblings or whatever, and young kids aren't known for their powers of self-restraint. Also, lots of guys have a very goal-orientated attitude when it comes to sex. They've got it into their head that the only goal is coming, so they try to get there as fast as possible.

Unless you are truly a freakishly sensitive dude (or you're utterly incapable of controlling what your hand does once you start masturbating), you should be able to learn to slow down and focus on the pleasurable sensations of the process rather than on getting to the goal of ejaculation as quick as you can.

You making yourself come so fast when you're masturbating isn't really a problem. It's your body, and if you want to do that, you're free to do it. But your habit does mean you're denying yourself more pleasure than what you experience now. I suggest you look into edging techniques. If you learn how to recognise when you're close to the edge and how to hold yourself back just before the point of inevitability, you'll be able to prolong the good feelings as you're masturbating, and it is very likely that when you finally allow yourself to go over the edge, the orgasm will be much more intense than what you feel now.

As for the impact of you training yourself to come so quickly when you have sex with a woman, paradoxically, this doesn't really need to be a problem if you have the right attitude and some skills. The average time for a woman to reach orgasm if she's getting the right sort of stimulation of her clitoris is something like fifteen minutes; a few women require much less if the situation is just right, and some women require a lot longer. Obviously, your current hair-trigger means you couldn't last that long, but the fact is that the vast majority of women can't reach orgasm from just a penis moving in their vagina in any case (it's all about the position of their clitoris relative to the vagina and how, for most women, thrusting alone doesn't stimulate the clitoris very much).

A decent, considerate guy will always make sure that the woman he's with comes first, and the best way to do that is by hand or tongue. Once a woman has come, most really won't care too much how long it takes a guy to come once he's in her vagina. In fact, they might even get off on the idea that they've driven the guy so crazy that he can't control himself. But as with masturbation, if you learn how to control yourself and don't hammer away once you're in a vagina but rather just intermittently stroke, rock your pubic bone against the woman's clitoris when you're holding still, and focus on the more delicate sensations of that, you'll probably find that sex is much more enjoyable for both of you and your orgasm is much stronger.

When I was younger, I found that if I either masturbated before meeting my lover for the evening, or got her to suck me off to orgasm first, allowed me to relax and recover. Usually I would spend at least 10 or 15 minutes licking her pussy and pinching her nipples until she had at least one orgasm. Only then would I allow myself or her to take my rested and ready cock into her pussy. I found that I could last as long as she needed to achieve another orgasm, or until she would stimulate me to cum inside her. Never used a condom.

Also it helps if you have a kind and sensitive lover, who will slow down or even stop fucking you back when you feel as if you're ready to come. I've heard the term "edging" used in a similar context but I'm not sure if that's the same thing. My best lover was very sensitive to the condition of my penis and balls, and knew when I was about to cum. She would stop, talk to me for a minute or so, until I was ready to proceed again. You're very lucky if you can find such a sensitive and selfless lover. Actually, not so selfless because helping me last longer helped her achieve an orgasm.