Wooo... sorry it took me so long to get in there....Basically it's just cause by being nervous. It's alot more common than is talked about! Anyway, the problem is that if you "miss" once, your chance of "missing" again goes up. The trick is the not let your penis get intimidated.
Also, a tequnique used to help with losing it when putting on a condum is to PRACTICE with a condum. That is: start to masturbate as normal. Somewhere in the middle, stop, put one on, and then finnish off! It's like a firedrill so you can remain calm in the real fire!
Give it another shot, the more time you put in between last time and next time, the more focus and pressure you're going to be putting on yourself. And that's a bad thing.
Good luck!
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