YOU SAID:

we made a cake before we went to the party at our friend's boyfriend's house

INTO JAPANESE

友達の彼氏の家でパーティーに行く前にケーキを作りました

BACK INTO ENGLISH

I made a cake before going to a party at my friend's boyfriend's house

INTO JAPANESE

友達の彼氏の家でパーティーに行く前にケーキを作りました

BACK INTO ENGLISH

I made a cake before going to a party at my friend's boyfriend's house