YOU SAID:
when i look at you i smile
INTO JAPANESE
私はあなたを見るとき、私は笑顔
BACK INTO ENGLISH
I smile when I see you
INTO JAPANESE
あなたに会ったとき、私は微笑む
BACK INTO ENGLISH
I smile when I meet you
INTO JAPANESE
あなたに会うと私は笑う
BACK INTO ENGLISH
I laugh when i meet you
INTO JAPANESE
君に会うと笑う
BACK INTO ENGLISH
I laugh when I see you
INTO JAPANESE
あなたに会ったら笑う
BACK INTO ENGLISH
Laugh when you meet
INTO JAPANESE
会ったら笑う
BACK INTO ENGLISH
Laugh when you meet
That didn't even make that much sense in English.