YOU SAID:
I will touch you if you smile.
INTO JAPANESE
あなたが笑ったら私はあなたに触れます。
BACK INTO ENGLISH
I touch you when you laugh.
INTO JAPANESE
あなたが笑うとき私はあなたに触れます。
BACK INTO ENGLISH
I touch you when you laugh.
That didn't even make that much sense in English.