well, what do you mean by "trying to fall back in love"?
I agree w/ stuh, you can't expect to ever have that same initial excitement and "spark" that is there when you're fiirst with someone. That is just the newness, and your wife can't ever really be
new to you again. Especially if you're comparing your feelings for your wife with the excitement of the flirtation you've been having with that other girl, your love for your wife is going to seem less exciting in comparison.
You should be thinking of your relationship wiht your wife with your whole heart, not approaching it as, "If things with my wife become good enough,
then I'll forget about the other woman. But until I see that things can be exciting again with my wife, I'm keeping my options open." If that is how you're approaching it (and it seemed to be for a large part of your posts here), then you aren't giving your wife or your marriage a fair chance because your heart isn't in it.
And you mentioned it being "so much easier" if things worked out with your wife. If making things easy on yourself is your reason for trying, again, your heart really isn't in it.
So what are you trying to do to fall back in love? My mom gave me some really good advice once. She said that when she and my dad split up for a while, while she was gone she realized that she had changed the way she thought about him. When they were first together, she always thought good things about him, and that made her feel good and led to her being happy wiht him. As they were together longer, she had slipped in to the habit of thinking only negative things about him. She made a concious effort to change this, and forced herself to think of good things about him everytime a bad thought popped into her head. She said that she changed her pattern of thinking until it became a habit again, as it had been when they were first together. I have used this strategy in my own relationship (5 years and counting
) and it really can help. You must make a real effort to change your habit of thinking, though, and it takes time.