I think we're forgetting an important aspect to sex, here. When guy has a big dick, and he shows his girlfriend in the right way, at the right time, she will be greatly impressed, and will want to play with it. It becomes her toy, too. By impressing her, she will want to have it more often.
Then if he can just convince her that it's a "magic wand" that is able to please her in all positions, time after time, for as long as she wants it, as deep or as shallow as she could ever want it, touching all the right spots, then she's just as hooked on a big dick as he is, and at the same time she also knows that the likelihood of her ever finding another one like that is slim, and none.
So the trick is to make your big cock a feature. Let her play with it, let her know that all that is hers for the asking, and she will put two and two together, herself. But if her first experience with it is to get it shoved into her pussy very unceremoniously, without an introduction, she may or may not care much for it, after that. It's all in the presentation.
With women, perception is 90% of the battle. It isn't what really IS. It's all what it appears to be! That's what counts. And if she likes your cock right up front, from the first, then you're "in like Flynn," so to speak.[/QUOTE
I couldn't have said it better!!!