Just for the hell of it, I created a J/D synastry chart.  I used my astrology software, created natal charts for each of them, then blended them in a synastry chart to see what it said.  What’s displayed in both canon and love-relationship fiction is actually displayed in the chart.  Cue amazement. 🙂  I actually expected the result to contradict J/D love.  It didn’t. 🙂

Chart is in the menu and here.