i seem to be too long for my girlfriend, unless i get her 100% hot of course. nothing can be too big when a girl is properly comfortable and wanting. well, nothing my-sizish at least. but that's become rare in my case since we've been together for a long time and i'm narcissistic bastard which she knows too well. i have not, like some of the bigger men here i believe, come to be like that because of my cock size, which ranges respectably above average. on contrary - i have major issues with it. most of the time i think it's just too thin. that sort of low penis-esteem is nothing but another simptom of my egotism. i have a few advices: never let a girl know you are concerned about your cock size, never ask her is it big for 10 times in a row. and never, never talk about your cock for more than half an hour. then she'll probably like it. unless you are pathetically small, of course - in that case just do whatever you want. ha ha ha ha ha, pathetically small people, see how much of a narcissistic bastard i am.
P.S. speaking from experience too, for a virgin or a near virgin even my girth can also be very much of a problem.