I believe he took the only cure and it caused the memory loss,

@violet75 said:

I believe he took the only cure and it caused the memory loss,

Is his memory loss real or is he faking it?

It is real, I'm pretty sure

He's human for sure but maybe his memory loss is fake. I guess he's too smart and very good amnesia faker. We will see I just feel it.

@Jassem said:

He's human for sure but maybe his memory loss is fake. I guess he's too smart and very good amnesia faker. We will see I just feel it.

I agree. I think he, at least, has been faking it since the memory cure was administered if not always. See how Liv had the enhanced flashes from the drug soaked brain? That's a clue from the writers. Blaine's in love.