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.