Rejoice in the memories, but think of her as a unique individual, like a first born, and the next born deserves a clean slate and appreciation of her own qualities. Desperate people are out there making big mistakes every day. Don't be one of them. Moving on, of course. Just make new friends first and let love come when the time is right.
Life is a gift.
We are here to learn and grow and loss is a lesson we will all have to experience. There are many many books out there. There are support groups for everything. I am a very emotional person. Reading something like this only brings tears in my eyes.