Pen - Could you be misplacing the real issue because your brain associates TKD with the A? Is it really unhealthy for a R where one member has an exercise activity they do a few times a week?
Maybe this is just the fact that TKD is a constant reminder to you of the pain/hurt of the EA.
Maybe talk to your W about that instead of getting angry, making statements like you choose it over M...maybe give your W some options of things that will ease your anxiety and allow her to pursue her interests...
M39 W41 Two children WAW bomb dropped 11/7/09 Piecing Aug 10 - Nov 10 No longer piecing...Nov 10 Separation Jan 11 EA ends again Feb 11 Piecing attempt #2, Mar 11