my advice is to ignore those guys. breast size is not important, in the grand scale of things, and who wants a guy who only wants them for whats inside their bra cups?
i am also a 32A and used to feel very self conscious about my smaller chest, but i have grown to love it. with bigger boobs, you look suffocated in rollneck tops, which i adore, and hey, who wants back ache?
personally, i think smaller boobs look better anyway.
and in the big picture, it makes no difference. the function of breasts is not to attract a mate, it is to feed your children if you so happen to have them. as size has no bearing on how well you perform in this certain task, then there is no problem.
of course i understand how you feel and it will take more than my words to encourage you to feel otherwise.
further express a part of you you are more comfortable with, such as your defined shoulders, or flat stomach, or whatever it so happens to be. make yourself feel good DESPITE how you feel about your breasts, and those feelings will soon be more positive.
feel free to PM me if you want someone to chat to about the asses that are young people and their views on our bodies :P
x