YOU SAID:
I want my boyfriend to be a catboy.
INTO JAPANESE
私は彼氏にキャットボーイズになってほしい。
BACK INTO ENGLISH
I want my boyfriend to be Catboys.
INTO JAPANESE
私は彼氏にキャットボーイズであってほしい。
BACK INTO ENGLISH
I want my boyfriend to be Catboys.
That didn't even make that much sense in English.