I'm not talking about to be attractive when we want to meet that girl we desire. I'm talking when we already have her and the course of the years has made some attraction erosion appear.

How to keep attracted our female partner, once the love is well based?

I have read interesting and revolutionary theories about attraction here. "if you want to be a attractive, you have to become a challenge" and much more... but

Where the fine line between been a "nice guy" and becoming a "good guy" considering a ongoing relationship over the years?

"Make yourself not too much available, and you will give her space to miss you"... If you have a relationship that has already a system working over the years, and suddently I start doing some unavailable stuff, how can resentment be avoided?

Since I'm a giver person in love, and I know it's not wrong to be a giver once if you learned how to receive too, I'm trying to understand how does this "laws of attraction" would be fitted into a couple with years on their roads.

Any tips? :D

If the attraction is really sincere,(and both would know) then I don't think you would have any trouble keeping the 'spark' going. It all comes naturally and comfortably. Anything else would be manipulation.

Yes, once it grows, and is real, it will be there. As you grow old, lose the hair, what hair is left is grey, that spare tire is more like a set of all 4,

You will be just the stud you were at 20, if love is really there.