It’s no secret that long distance relationships are difficult. They tend to collapse under the weight of constant Skyping and mounting credit card debt. Lots of them also fail for the same reasons no-distance relationships fail. Sure, there are couples who make long distance work, but they are rare. If you're learning that absence makes the heart grow fonder the hard way, and wondering why your bi-coastal romance is going south, you're not alone. Here are 10 Reasons Why Long Distance Relationships Fail.