YOU SAID:
I'm so bored that I decided to go on this website
INTO JAPANESE
私はこのウェブサイトに行くことにしたので、私はとても退屈です
BACK INTO ENGLISH
I am very bored because I decided to go to this website
INTO JAPANESE
私はこのウェブサイトに行くことに決めたので、私は非常に退屈です
BACK INTO ENGLISH
I am very bored because I decided to go to this website
You've done this before, haven't you.