@AnUnknownPerson Uuhh yes, it is. Sure he said it out of fear for the lives of others and wasn't all that into it, but he still suggested and went with it. He's regretting it now because Amon is being weirdly possessive. That's because in his mind, this is a punishment that Nain agreed to, even suggested it. So no matter how much he would plea to stop, he won't. Because Nain is being punished in Amon's world view.
So, no, it's not rape, not really. It's just a very unpleasant moment for us to witness.
Strawberries are neither classified as a berry nor do they come from straws. They are liars and false to the core. Do not trust the strawberry.