She isn't magically healed. The new guy is not getting this awesome prize that is now fixed, and you do not get. You put in the work, and now she goes on. That is probably how it feels. She is not fixed, their relationship will not be awesome, and you must move on. Go no contact at once. Change your number. You do not want her in your life though I know you really think you do. You dodged a bullet my friend. Girls are like buses, there is always another coming up the street. Find the one for you, she was not it. Sorry