I'm not too hung up on whether this speculation is correct or not, but I will note that I've read an EU book in which either Obi Wan or Qui Gon fell in love with a female Jedi and was planning to marry her.
I think it was Qui Gon, but honestly, most of the books are such that I try to put them out of my mind and remember to not read any of them. But then I get sucked in again, sigh.... Pretty sure it was in one of the YA series.
I don't recall anything explicit in the movies where they were saying, "Yo, can't do the parent thing 'cause JEDI." But, hey, I don't spend a lot of time thinking about these things; if it was in the prequels in particular it would've blown right passed me.
Also, considering how much of the lore was pulled from Dune, and how the Bene Gesserit were all about the procreating, I'm open to suggestion that Jedi aren't necessarily celibate.