Quality versus quantity. You must learn the difference.
A quality woman will ALWAYS have admirers but a quality woman loves and respects her man enough to not even be tempted by other men. I could and would never give my heart to a man who believes that what we have together is fleeting and disposal. Most women who are looking for everlasting love wouldn't either. How can you even begin to build with someone who dismisses your love and affection as a "novelty"? Women who are genuine and have open hearts would run in the other direction. But women who like to play games and who are master manipulators will take you on for a free ride to see who can use whom first/harder/faster/better/worse/ etc.
So again, look for quality. Look past the girls who advertise themselves solely to appeal to your sexual desires and look for attractive women of more substance. I'm sorry that you haven't had the loyalty from friends and the loves in your life that you deserve but there are still kind hearted, genuine, loyal, loving people in the world but you have to be open (and discerning) enough to allow them in.