YOU SAID:
i have a crush on you
INTO JAPANESE
私はあなたにときめきを持っている
BACK INTO ENGLISH
I've got a crush on you
INTO JAPANESE
あなたに片思いを持っています。
BACK INTO ENGLISH
You have unrequited love.
INTO JAPANESE
あなたが片思い。
BACK INTO ENGLISH
Crush on you.
INTO JAPANESE
あなたにつぶします。
BACK INTO ENGLISH
Crush on you.
That didn't even make that much sense in English.