Let her go with love and joy. Make new friends but be careful to not compare them to her or you will be left wanting, always disappointed. You have already lost her so by letting her go, you are gaining yourself back.
If and when she chooses to come back to you, you will still be here. If you continue to hold on, you will loose yourself and gain nothing but sadness and grief.
Please let go allow yourself to be happy again, yes you can be happy again. 💜