As for Nathan/Lucas, I think what you said about LH applies to them. NL became more family than friends, but I never looked at them as BFFs.
Maybe this wasn't directed at me, but I'm just putting my 2 cents in as far this goes. I'm not trying to diminish BH or any other friendship by ignoring history. It's actually because of history/story that I think they're not each other's BFF's. Really close and good friends? Yes, but BFFs? No. I can't see it now and I didn't see it then.
But all of this just really comes from how we understand and interpret the show. I, for one, can't just ignore the off-set things that have influenced this show greatly and how they affected a lot of the things that happened on-screen, particularly said friendships. Maybe it's wrong of me to do so, but I refuse to do it.
Lets just agree to disagree. I saw BH as BFF just like BP were. BP were not always the best of friends either, their fallout outs and lags in friendship did not negate their BFF status so I don't get why a lag in BH would mean they couldn't still be best friends considering that is how they saw each other since s3. I can relate to BH more because of how they were written. I personally don't see them rarely seeing each other during the college years as indicative of a lesser friendship. I love my best friend(we've been BFFs since middle school) but we were separated when we chose to go to different schools, we didn't talk as much and rarely saw each other. We were still great friends though.
Also the show told us that BP were best friends forever, they also told us the BH were best friends. I don't get why one would ignore the show's writing of one but take the other as gospel. If we were going by only what was written/shown, I still don't see how one would be the superior friendship.
Also my statement was not towards you personally, there was another statement in this thread that basically said that LH and BP were superior and that they basically didn't care about the writing BH. For me that's crap and one should not even participate in a discussion about story when they chose to ignore how the story was written just because they don't like it.
For me personally, I don't care what happened backstage and in my opinion backstage has nothing to do with the story. Backstage BS doesn't change the fact that certain things happened onscreen and that became a fact for the show. I personally think its stupid to say that the backstage stuff is what really matters and not the onscreen story. That would be like me saying that all LP were really did not matter (that BL will always truly be the love story and Brooke is the one Luke really wanted) because BL would have continued to be the story had Chad not cheated on Sophia. I don't ignore LP's whole story and history because of crap that happened behind the scenes. Ignoring the written friendship and status of BH is basically doing what I just said.