Verse:
G:-------------------------------6----
D:-------------4-5---5-6-7--8-9------
A:--3---3-2-----------------------3---
E:------------------------------------

"you look wonderful tonight" part:
G:--------------------------------------------------
D:----------------4-5--7--9--8-7-6--5---------------
A:--3---3-4-5---6-----------------------5---3---(3)-
E:--------------------------------------------------

"you just don't know how much I love you" part:
G:----------------------------------------------
D:----------------4-5--7--9--8-7-6--5-----------
A:--3---3-4-5---6---------------------5---3---5-
E:----------------------------------------------

This sounds right to me... theres a few variations... but I didn't tab them out... You might have to figure out the rhythm by yourself.

Tabbed by Janyeno