How would you judge a guy like that? Don’t even bother with judgment. It’s a waste of your time to even think about him. The girl should be grateful that he rejected her…because that has cleared the way for her to find a better guy.
As to why he rejected her…could be that he wants a “pure” girl. Could be that he doesn’t believe that the girl was raped and thinks that maybe it’s a cover-up for consensual sex which would give the impression that she is “loose.”
Could even be that the guy rejected her for some other reason (incompatible personality, family background, etc) and since it’s not easy to explain the reason for rejection…it leads to assumptions.
Either way…spend your time on someone who is more worthy of it.