YOU SAID:

i am going to confess to him on february first

INTO JAPANESE

私は2月1日に彼に告白するつもりです

BACK INTO ENGLISH

I am going to confess him to him on February 1

INTO JAPANESE

私は2月1日に彼を彼に告白するつもりです

BACK INTO ENGLISH

I am going to confess him to him on February 1