Cheating on Girlfriend

[phoon]

Note: I posted this in Student Life, but I thought it might get more/better responses in here. Plus, the answers might be different. Thanks everyone!

Okay, so I want to cheat on my girlfriend. I know, it's a douche thing to do, I know that, so let's save the lecturing for another day.

Here's the situation:

My female cousin a year younger than me had a birthday party a few months ago. I attended and went out with her and her group of friends. Turns out she has this cute, intelligent, awesome Polish friend who pretty much latched on to me the whole night. I facebooked her and we've been chatting through email and text and phone, talking pretty much every day since then. I've really grown to like her, and I want to know whether she would be worth leaving my girlfriend for.

I have cheated on my girlfriend before, with several others, but I've never felt attracted to them the way I am to this girl. It was always purely sexual or whatever.

The funny thing is, Polish girl never said a thing about me having a girlfriend, but she would flirts with me all the time. Even more, she wants to hang out alone. Is she this naive to flirt with a guy and not have intentions of more than that? Why would she ask about my girlfriend this late into our talking?

Ideas? Answers? Thanks in advance guys!