I have a rather embarrassing problem....
my girlfriend gave me a "handjob" a fortnight or so ago, and it was mine first time receiving and her first time giving (to/from anybody - not just each other).
When we used to kiss, I occassionally got a bit of "pre-cum" in my underwear - now however, I seem almost entirely unable to ejaculate - I have to help her out but even then the process takes far longer than it should...basically - the opposite of Jim from American Pie 1!
I think nerves might play a part, but i'm generally not too nervous, however I would appreciate any advice on how to solve this problem.