In my opinion, Quote and Curly are an inseperable pair.
The only time you can actually try to begin to figure out their relationship is after Curly regains her memories. Up until that point, Q and C are strangers... And even when Curly regains her memories what about Quote?
Maybe the scenes going into hell, are Quote remembering fragments of things he learnt once... [About Ballos, about Jenka, about Misery...] But does he remember Curly?
"I'm fine, thank you.
Don't worry about me.
Oh, here.
Take this with you..."
-Got the OIron BondO!
Iron Bond - Your tie to Curly Brace, the only warrior you would trust your back to. Surely you will meet again one day...
The only other dialogue you get to hear that relates to Q and C from Curly would be her statement about "Now that our mission is over, I want to live out the rest of my days somewhere where I can relax and enjoy a beautiful view. Let's the three of us live together!"
As funny as the Little man's special dialogue is "... Aren't you forgetting something?" I find it a little ominous.
Curly's attitude in most of her dialogue comes off as pretty carefree, I think. However giving Quote the Iron Bond, and perhaps... Back then in the Core room when she sacrificed herself for Quote... Remember that is the point where Quote or someone remembers their first memory about Jenka... and Ballos.
What if Curly remembered something about Quote then. Maybe a familar scene, I mean Curly just stands there as the room floods, you can't even talk to her. Then the narration memory? thing happens, and then you find out what happened to Curly.
"Ooohh...
.....
You're alive!
Oh, I'm so glad...
I didn't think we were going to make it.
Once you fell unconscious, I couldn't think of any other way...
Looks like my air tanks worked just like I'd hoped.
Ah..."
Whether she remembers what Quote means to her at that point, can be anyone's guess. But, at least you can get an idea of her personality, from the things that have happened so far.
The Mimigas she raised are a good measure of her personality as well...
Bringing that up raises a major question though, as what happened to them?
Did Curly try to confront Misery once more about those kids? And is that how she ended transported to Hell? EDIT: Maybe this doesn't seem likely on second thought, but it still doesn't explain how she ends up there.
Well who knows about that at the moment...
So bottomline...
In my opinion, Quote and Curly are an inseperable pair.
How does Curly feel towards Quote? She wants to stick with Quote, and live out her days peacefully. That sounds like love to me.
What about Quote the mystery? Assuming he didn't recover all of his memories yet, maybe Curly wants to take him somewhere he can be at peace.
If you do follow the best ending path, Quote saves Curly with the hook thing, goes to great lengths to save her at the Waterway Cabin, and even finds her that Mushroom which he does not eat, to help Curly. Just a really nice robot?
I wonder... what kind of painful memories Quote may have lived through? To be a pair of robots? without equal, they must have done exceptional things in their time.
As for
"Curly looks WAY older than Quote in Pixel's art."
I don't see that
"Chaco and [edit]ing. Quote will be risking being a divorcee if Curly finds out."
There is no real evidence to say anything happened
...
The truth is, it's more of a thing related to the panty thing.
I mean I don't live in Japan, but there's quite a few PC games, that have that little bit of ecchi? element thrown in. And Cave Story is a game that has references to so many games. ... there are quite a few suggestive quotes here and there, I am only guessing that Pixel had something similar in the original text, and it wasn't just the translation.
From what I hear, a lot of games use that little ecchi? edge to help grab more players, and I think it spreads. I'd be willing to think that those things in Cave Story are tributes to that kind of thing.
"The first female you hear of is Sue. The immediate assumption is that the main character falls for her."
I wouldn't exactly phrase it like that.. lol But, yeah Sue, is the character Pixel catches you with from the beginning. In a way Cave Story is about the Sakamoto's, especially Sue. It's like there are three stories happening at once. Sakamoto's story, Curly and Quote's story, and the Mimigas Story; and they all kind of intertwine. [Jenka, Misery, Ballos and Balrog I was kind of including in Q and C's story but perhaps they really should be seperate...]
But, there must be some significance to Sue's importance in the game. I'd still like to believe that Sue's missing father was part of the War 10 years ago. If something happened to him then...
And on another unrelated note, everyone in Cave Story assumes Quote and Curly are soldiers from the Surface; does anybody really know what they really are? I guess the only information we have is that "We were sent to destroy the Crown" as opposed to all the other robots...