YOU SAID:

After my afternoon is over, I will go after my boyfriend for an after lunch snack.

INTO JAPANESE

午後が終わったら、彼氏の後を追って昼食後のおやつを食べに行きます。

BACK INTO ENGLISH

When the afternoon is over, I follow my boyfriend out for an after-lunch snack.

INTO JAPANESE

午後が終わると、彼氏の後について昼食後のおやつを食べに行きます。

BACK INTO ENGLISH

At the end of the afternoon, I follow my boyfriend to an after-lunch snack.

INTO JAPANESE

午後の終わりに、私はボーイフレンドについて昼食後のおやつに行きます。

BACK INTO ENGLISH

At the end of the afternoon, I follow my boyfriend to an after-lunch snack.