We need details!
What do you have? What do you lack/need/want (that should be quite a list).
Based on my limited knowledge of the opposite sex, get something that you will carry alot, so she can see you use it.
You know, a lot of guys on here talk about fancy and expensive and usually large folders or fixed bladed knives.
I would recommend that you ask her for a knife that you can carry, most anywhere, anytime, a real everyday using knife - which would of course depend on your everday needs.
Just my opinion.
<font face="Verdana, Arial" size="2">Originally posted by Guntaholic: Tonight over dinner my girlfriend really blew me away! She said she would buy me a new knife of my choice for Valentines Day. Any suggestions?</font>