All Jedi who were involved in love were fallen to the dark side. Including Luke and Leia's son Jacen Solo. Almost everybody on Skywalkers family tree were fallen into the Dark Side. But, ofcource, later they turned back, but anyway... Love is not a Jedi buisiness. Jedi is a machine with a soul. But you are correct, this is offtopic already.
P.S.: Sry for my English, i am Russian.
Luke fell to the dark side because he thought he could control it. love brought him back to the light.