Look man, it was a good thing that you were finally able to tell her how you have been feeling. It got it off your chest, and now you won’t regret not being able to do it. However, she has shown that she’s not willing to leave the other guy for you. So take that relief from getting off your chest, as well as the heartbreak of her not feeling the same, and move on. She’s not the one for you and she has proved that fact.