Anyone who treats a friend this way isn't a friend. Furthermore, it's clear that she has dumped you as a friend, but you aren't ready to let go. Holding on only works if both are doing it--she isn't. She is not your friend. Stop hanging around her and mooning over a friendship that doesn't exist, and over someone who isn't worth having for a friend. Get on with your life. There are plenty of decent people out there who are worth having a friend, but you are going to have a hard time finding them as long as you are still moping about over this lost cause. Here are some better things you could, and should, be doing instead.
- Exercise. It generates mood boosting endorphins.
- Read funny stories and watch funny shows. Humor also generates endorphins.
- Eat healthy, and enough of it. A healthier diet will boost your immune system and is also good for your mind. Skimping on amount of food leads to depression, crankiness, and being more prone to get sick.
- Get enough rest. Being tired leads to depression, crankiness, and being more prone to get sick, too.
- Listen to and/or play music. This is mood boosting.
- Volunteer. There are people worse off than we are, who would really appreciate the help. It's also a good way to meet people, and boost your self image and mood.
- Take up a hobby or join a club. These are good ways to meet people who share your interests.
- Get involved in community activities. Attend town meetings, events at local libraries and other local organizations. Attend local sporting events, fairs, and art shows. Attend and/or participate in local theater groups. These are all great ways to meet people and boost your self image and mood.
- Employment/or self employment. Great way to meet people, boost self image, put money in your wallet, gain experience. Since you have been having trouble finding work as an employee, perhaps you should consider self employment. There are many types to choose from.
Now stop crying in your root beer, and start living! 
_________________
If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau