“If a woman's cunt is dry, you can't put your dick inside her”
Without causing abrasions or internal injury. If this has happened, it can be used as evidence in a trial. However, if there’s no internal injury, then the absence of evidence is not evidence in itself.
“Also, I saw some statistics that women tend to get orgasms during rape.”
That can happen involuntarily.
“So if she liked it, is it really rape?”
There are two kinds of people who ask questions like that. One is rapists, and the other are their enablers.