YOU SAID:
I will find girlfriend this summer
INTO JAPANESE
私はこの夏ガールフレンドを見つけるでしょう
BACK INTO ENGLISH
I will find my girlfriend this summer
INTO JAPANESE
私はこの夏私のガールフレンドを見つけるでしょう
BACK INTO ENGLISH
I will find my girlfriend this summer
That didn't even make that much sense in English.