YOU SAID:

I am a boy and I have a boyfriend

INTO JAPANESE

少年と彼氏がいます。

BACK INTO ENGLISH

The boy and her boyfriend.

INTO JAPANESE

少年は、彼女の彼氏。

BACK INTO ENGLISH

The boy is her boyfriend.

INTO JAPANESE

少年は彼氏です。

BACK INTO ENGLISH

The boy is her boyfriend.