YOU SAID:

i played dumb but i always knew

INTO JAPANESE

私は愚かなふりをしましたが、私はいつも知っていました

BACK INTO ENGLISH

I pretended to be stupid, but I always knew

INTO JAPANESE

私は愚かなふりをしたが、私はいつも知っていた

BACK INTO ENGLISH

I pretended to be stupid, but I always knew