EU material; that contradicts this is wrong. I am afraid your interpretation is wrong also; no amount of support would have helped unless it was support for him to give up the relationship.
The most important thing to stress here is that all produced Star Wars is for yourself to enjoy. Whatever interpretation you want to put on what is and is not so is absolutely your business.
[...]I must absolutely stress the point that none of this is based on simple personal preference. There is sometimes a feeling, for example, that some people seek to cut the EU out of continuity because they dislike it. Well, speaking personally, I don’t like Return of the Jedi, but that doesn’t mean I want to cut it out of continuity. All decisions in this area are based on statements by George Lucas and senior members of Lucasfilm. If they clearly and unequivocally change their minds, so shall we.
[...]
2. As far as the EU section is concerned, the films are the most important canon. The rest of the canon is rated in-house as part of an ongoing continuity effort by the makers and as much as it can be, that can be treated as the way of things here. Generally speaking, books are very canon, computer games aren’t, but it’s not quite as simple as that. Ask around and you shall find out.
We've got a phrase that gets tossed around here a lot:
"Your interpretation <<< Canon"
The EU forum is founded on the fairly straightforward idea that the EU is canon. I'm... baffled as to how you can post something like "the EU is wrong" and expect the post to be received with anything less than derision.
Anyway, there is a huge amount of EU that gets nerfed by your new "EU is wrong" idea:
Shatterpoint, because Mace has an undeniable attachment to Depa.
The Jedi Apprentice series in its entirety, because of Kenobi's attachment to one young freedom fighter (and eventual departure from the order) as well as Jinn's friendship with the Jedi Knight Tahl.
Literally the entire New Jedi Order series, which includes relationships between Jaina and Jag, Tahiri and Anakin, Leia and Han, and obviously Luke and Mara.
Dark Rendezvous includes a subplot about the relationship between Scout and Whie that could be interpreted as romantic.
This is a prodigious amount of material--and certainly not an exhaustive list-- to declare "wrong" so casually. Instead, I'm going to have to interpret such a casual disregard for the source material as a joke of some sort. 😆
Personally I believe that the NJO has a much healthier interpretation of the Force and the danger of attachments than did the Golden Age Jedi. Biological fact doesn't go away just because you declare it to be wrong. Acceding to feelings, going with the flow and mastering one's actions, rather than suppressing them, is a more psychologically effective strategy. (From a narrative standpoint it also makes characters more dynamic; the more relationships and intricacies each character has to navigate, the more opportunities for soul-crushing inadvertent betrayal.)