kramus, I'm going to take a stab in the dark here and suggest that mainly it has given you a shake-up as to the role you have taken on in your life. The role you played when you were together, and then the role you have played up to this point.
Your role is affirmed by those around you, and when one of those people move in a different and independant direction this would cause you to re-evaluate the role you currently play in regard to that particular person. I think this may be the main reason for your unsettled feelings or 'oddness'.
This may be way off but that was my first thought. You are an amazing soul with many talents.. I think you may find that you will deal with this better than you may be willing to give yourself credit for..
