Not Knowing Anything

From the start, Ethan had been aware that there was something mysterious about Carolina. This woman seems to have a lot of secrets.

Ethan initially thinks Carolina wants to keep their marriage a secret because it has something to do with her identity as a great hacker called FA.

But, on second thought, it seemed to have something more. It didn't make sense for Carolina to keep their marriage a secret just because she wanted to keep her identity as a hacker, after all, Ethan already knew that.

So Ethan didn't really know what Carolina was hiding to want to keep their marriage a secret.

Ethan also didn't know where his father-in-law had gone because Carolina didn't want to talk about it at the time, if indeed he was dead, Carolina could have said he was dead, but Carolina never said that.

Ethan realizes that in addition to being a great hacker, Carolina has many other secrets that he doesn't know.