Sometimes a relationship is fine, it's comfortable, it's working... until one day you meet another person and you realize it could be better with this new person.

The grass is always greener. It's only worth breaking up if he relationship is not working.

That's fine if you want to jump from relationship to relationship for the rest of your life. Eventually though, all these relationships will end up at the "fine, comfortable, and working" stage because contrary to what you've said, no one fits together perfectly. Most people learn to live with that, sit with their…