
At first he really couldn't remember but after few days his amnesia was cured and he remembered everything, but coz he wanted to remove all corrupt and those elders he pretended to still have amnesia, (read the novel so knew ) and after removing all the elders from council the new generation will take their place and thw illegitimate child of that elder will become the head of the house.

I think so too, but that's some aiden thought would happen if he revealed, tho even when he revealed everything and was ready to get a furious Erin, instead he got compliment by her she said if she was in his place she'll do the same thing too, and it was good thing she didn't know co she'll be way too happy to control her emotion(and she's pregnant now)
There is one thing that I can't understand why can't ml share their amazing and unique idea of faking amnesia to their partner like dude why can't you just talk with fl when you have such a excellent and understanding partner