Hi there, cncsiu!
First off, cool question. I want to steer you in the right direction, so what kind of guy turns her on? Is she more into the alpha male type? The jock? The shy guy? Casanova?
Ooh, you know what would help me figure it out? Who are her “celebrity crushes”? Does she like a Brad Pitt or a Sly Stallone? Etc…
What kind of guy are you already? How long have you been together and how do you get along?
You know, that kinda stuff. 
Your gift cert has been sent. Rock on!
EDIT: Ooh, I see you started a thread, here:
It might help to bring these questions into that thread and we can all figure out what best to recommend to you! 