She will know that she was not picked. From there, many will take the step towards assuming that she was not picked due to the fact that her body did not meet his standards. Surely it might be a wrong assumption, but many women would still make the assumption - there was a thread on here a short while ago and the poster worried that the guy was not performing in the bedroom due to her not having enough breast tissue. Weird? Might be weird, sure, but it is what it is.