Not sure whether your story is about British or Filipino relationship issues, you don't tell us this, it sounds to me that your girl has simply met someone else at the far side of the world, its tragic, but sadly happens.
Relationships break up every day of the week for a variety of reason's the least you could expect from her is a frank and full disclosure of what happened.
But if not, take some time out to examine your life plan, and then move on as quickly as you can without let or hindrance, pining for her will make you feel worse, it will take time, maybe 2-3 months but eventually, you will move on, trust me on this, I did exactly the same 4 years ago, now I am married, and happy again.