Is this really a deal breaker?

I've always been a little insecure about my body, but almost all girls are. What bothers me the most though is my boobs. I used to be okay with the size of them, they're not big, just a C, but I'm kind of petite anyways. That was until I was turned down by a guy who claimed that unless I got plastic surgery, no guy would want me for my looks. He said that it was something that no guy could overlook, unless he was really ugly too. I was so insulted, but of course, instead of getting mad at the guy, I took it to heart and now I think I need plastic surgery. IS it true that no guy will be able to overlook a girls chest size?
Is this really a deal breaker?
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