What I don't get is why there is no mention of any kind of guilt from you?
You say you love her, but you don't know why you can't give up on "the game", and you don't appear to have any conscience about this at all?
If not, then there are problems deeper than you merely cheating on her. If you feel no remorse at all, I'd set her free and quit hurting her. I have cheated before myself, and it was a huge disaster and I am lucky to have attained another chance. I find myself constantly in situations where there is a hot ass woman who I can have at any time I wish (literally, I'm not just blowin' smoke up your ass), but for some reason I can never go through with it. You can hide a plethora of things from your lady, your lover, etc., but you cannot hide the truth from your mind.
So, if things like this bother you, you won't be able to go through w/them as is the case w/myself. It took me learning the hard way to develop that conscience, but hopefully you'll locate it w/out tragedy first.
~SC~