Hi ib1512491136 welcome to the forum
I think, since you said you backed her decision, that you should at least try not to phone and text her. Not for her, but for you. This is giving her a carte blanche to decide what she wants. In the meanwhile, since you've both broken up, I think you should go on with your life since sitting back and waiting for someone else to take a decision over that I don't think is being fair to yourself. If, after those 3 years (or before, if she decides to renew the relationship) you will still have the same feelings and she decided she wants to continue the relationship - that will be a decision taken that time, under those circumstances.