YOU SAID:
I have a crush on my friend.
INTO JAPANESE
私は友人に片思いしています。
BACK INTO ENGLISH
I have unrequited love for my friend.
INTO JAPANESE
私は友人に対して報われない愛を持っています。
BACK INTO ENGLISH
I have a love that doesn't pay off for my friends.
INTO JAPANESE
私は私の友人のために報わない愛を持っています。
BACK INTO ENGLISH
I have a love that doesn't pay off for my friends.
You've done this before, haven't you.