In my love and happiness coaching, I see all kinds of behavior where women will do anything to try and keep a guy that is clearly not worthy and often not interested. I have done it in the past myself. When we attempt to manipulate, change, and hang onto someone by changing who we are or explaining bad behavior away there is no possible way this relationship can work.
Attempting to hang onto someone who is walking away makes you needy, clingy and very unattractive. Confidence is infinitely more attractive to a partner than neediness. A relationship will never work if you have the attitude that you will do whatever it takes to change yourself to keep another person. Being inauthentic will make you very unhappy and will destroy the relationship.
When someone shows you who they are, believe them! ~Maya Angelou