I am an "exploding out" C or a "slightly loose fit" D (stupid bra sizes) and I think that smaller breasts are a novelty. I think I posted about this a while ago. I've had larger breasts since I was about 11...one of our playmates is a AA and I think her breasts are gorgeous. However, one of our other playmates is a C/D and I think hers are great too! I guess I don't have a preference - I think I just think breasts are beautiful. Even in a non-sexual way. Just in an "ahhh - pretty" way.
Your girlfriend is probably just a little scared that you'll show more interest in the girl with the bigger chest. Easy solution - DON"T. Haha. Make sure your GF knows that you are most interested in her.
