I think this is where he finds out she's a virgin

Is it in the novel? Can you spoil a lil what comes after?

They do it then he tells her something like "is it your first time? That doesn't make sense we are married."Then he gets jealous/angry at his former self.
I think the next major event is when they go to the forest for work and he momentarily gets his memories back. He doesnt recognize her, then loses conciousness but when he wakes up he is her hubby again.
It will be generally fluffy until he regains his memories for real then everything goes to hell when all her lies will catch up to her.