actually :) if you look at the lore...jedi were allowed to love up until around the time yoda joined the jedi council..(one reason i hate the little green bastard claim he ruined the jedi order and made it weak ) Luke just followed the more traditional jedi stance on the issue.  take a look at Adurn/Nomi  Cavar(sp?)/Silvar(sp?)  and other knights of the old republic.  back durning the sith war.  and references durning the war of light and darkness suggest quite strongly jedi loved.  one jedi master actually gets killed by his wife who was converted to the darkside by Kane's brotherhood of darkness.