Honey, what you fail to understand is that she THINKS you are the one for her and she can fix you. She is not going to even going to notice any man no matter what he looks like because you are her focus...she will never really find happiness and her lives fulfilment unless you take yourself away and allow her to...yes she will hurt but she will mend.
You are selfishly denying her any "REAL" happiness. Because you selfishly want to grow tired of her BEFORE you let her go.
Man up, hurt yourself a little OR one of these lovely ladies is going to get PREGNANT and try and trap you Happens all the time and then you will be FUCKED!!! And deserve it too, I might add!