You loose boy friends or girl friend, fiances or husband/wives, everything happens for a reason. Some reasons we don't understand others we understand fully just don't want to believe it. You can find someone else, someone just as good or better. You learn from the mistakes before, you learn not do always go for the average person that you usually go for and travel outside the box you might be surprised on what you find.
""According to Greek mythology, humans were originally created with four legs, four arms and a head with two faces.
Fearing their power, Zeus split them apart, condemning them to spend their lives in search of their other half. ""
I think we do spend most of our lives looking for our other half, kind of crazy to realize but we do. We try finding our other half young. Some of use do find them young but others find it later.
Let it come to you, when life gives you lemons make lemonade.