Hello and welcome to Healthcare Magic. Thanks for your query.
It is common to have such feelings of confusion, desparation, etc. after a broken relationship, especially, if it has been your first one. Now, you have clearly mentioned that this girl has hurt you a lot and has has exhibited behaviour which clearly shows that she doesn't really love you. You have also made a decision that she is not the person for you. In such a case, I feel that it would be best to try and move on with life, rather than still continue to think about her behaviour and end up feeling more hurt.
If you feel that you need professional help to come out of this phase, please don't hesitate to talk to a psychologist
. Keep yourself active and engaged, set positive goals for yourself and start working towards them. I'm sure that you'll overcome this bad phase soon.
Wish you all the best.
Dr. Jonas Sundarakumar