Some relationships are simply meant to be. They are the easiest ones to end for both parties. You know when its going to happen, especially when you are both not really too fussed about the break up. On the other hand there are relationships that feel like they were definitely meant to be, right up until the point where one of the partners, dumps the other one. Then there is you, left all alone to your own devices, wondering what to do about your life.
Of course you'll feel alone and of course you might feel slightly lost. What needs to happen is that you make a conscious decision about whether or not you actually want your ex back. You need to make this decision because you need to be ready for rejection. Rejection is part of the process of trying to get an ex back and it is the fear of rejection that means most relationships end for good, don't let this happen to you. Don't feel sorry for yourself. Focus on getting your ex back but also focus on meeting friends, family and taking up a hobby that you have wanted to do for months!
There is plenty of free relationship advice available, but that isn't always the right route to be going down. Free relationship is pretty thin around the edges, and is usually just a filler to try and get you to buy products or services. Instead, search around for the best relationship e-books and read them from back to back until you know everything inside off by heart.