You live long enough with her kind - and her specifically - to know it means as much as "Mate with me?", yet to be asked bluntly like that is a surprise. You should have been suspicious though when she guided you to this secluded place far up in the home-tree.
Something else had been distracting you till now however. While you may not be familiar with all their behaviors, you had noticed that she had been squirming and fidgeting a lot today and throughout this climb. Ususally moving through the tree was a breeze for her, unlike for you, but today she had to stop numerous time, clenching her legs together. She even clutched her crotch occasionally.
You wondered, does she have to.. pee?..
However when you asked about it, she only smirked with a blush and quickly continued climbing.
Anyways, now we had arrived - and your blue friend had taken off her clothing! The Na'vi are generally not that shy when taking them off for bathing etc. but today she had done it differently... more.. sensual?
Thoughtfully you look at her bare butt for a moment as she folds the woven material and places it onto a branch.
Warm thoughts about this equally scary and exciting months among the Na'vi flash in front of your eyes when she looks at you behind her shoulder.
Things had changed rather recently though.
It is only a week since she had gone through her Uniltaron* - the rite of passage every Na'vi must pass to count as an adult and be in position to chose a mate. It was not pleasant for you to watch her doing it as she is fairly young and the unconscious struggle was violent. Yet afterwards she was happier than ever... and what is happening now may be part of the reason she bravely pushed through that.
"N..nhh.."
You are taken out of your thoughts by a strained sound escaping her.
Her shaking worsens when she climbs into the snonivi, the intricate hammock, still only showing her back to you. You are worried that she is actually hurt somehow, or maybe she has a lot of doubts about this?.. Does she feel forced to?..
Suddenly she turns around and your eyes immediately drift down her abdomen.
When swimming or just by casual windgusts displacing her typical loincloth, you have had glimpses of her intimate parts, however you have never seen them glow as brightly as they currently do - even rivaling the setting sun right now.
Something else is way different too though: Her lower belly, slightly below her stomach even is distanded noticeably with a bulge. Her blue skin is clearly stretched and it has a shiny, golde-yellowish glow to it. It's not excluded that it's body paint which is not uncommon in Na'vi, but it certainly doesn't seme like that.
If you gasp at this sight, she smiles and welcomes you closer, even if your eyes may be locked on her 'privates', her particularly enticing snomo'nrr** which is firmly nested between her vaginal folds with the tip hidden within her.
"Nga kawkrr tse’a na'vi fìfya, skien? .. you have never seen a Na'vi like this, right?" She asks, switching to your language as she knows it is easier for you to understand.
"Dear. Y..you seem in pain..", you mutter, drawing a chuckle from her but indeed she is even panting lightly and a hand rubs over that golden bulge.
"I am, but for you I am glad to be." Your widening eyes make her continue quickly.
"Well, this may not mean anything in your culture, but you know how our snomo'n.. tendril? that may be the right word! ..how it plugs our bladder, right?"
You nod, having been briefed on the Na'vi's anatomy albeit all knowledge you had was rather vague.
"I didn't know the tip is indeed in your, well, peehole."
"Oh it is. I can feel it more in there than ever right now.", she replies with a strained giggle. Her legs close and open once and for a moment she cups her crotch with her four-fingered hand.
"So it is part of our mating ritual to keep it in there from the moment they decide to ask for mateship. That has been yesterday morning...
It is a way to show ourselves as well as our mates that we are determined and yet can control ourselves."
You gasp again but shuffle closer.
"Are you telling me you have been holding it since a day and a half?.. Just.. for me?.."
"I have!", she replies proudly and reaches for your hand. Then she guides it to her lower belly, letting you touch right this golden patch.
"Think I can be proud, right? I have seen my mom do it often but she never got it as golden and round like this." she adds, grinning a little.
That face of hers reminds you why you have decided to stay with her here at hometree.
Her body or especially this bulge is pulsing below your hand. You can feel the tension, yet you cannot resist to rub slightly up and down, making her squirm a little more.
"You are so strong, my sweetheart.", you whisper while you make eye contact again. The squirming worsens however as it is her instincts that flood her with anticipation. A desire deep within her.. A desire to release this built up liquid but only driven by the desire for you!
"Now.. what is the next step?", you ask a bit unsure.
"If you agree to be my mate, I will relieve myself, revealing the, uhm, entrance my tendril also covers.
The flood will flow across you if you allow and down the tree, showing to the tribe that a bond was formed."
Suddenly you realize that you have seen yellowish liquid pouring down the stem of the tree occasionally, but you always assumed it was just rain water trapped somewhere or tree sap.
"If you don't, well, then I will climb back down, trying to stay dry.", she adds, audibly trying not to sound sad. She does not want to just convince you by appealing to your conscience. Mateship is pure to the Na'vi after all...
For several seconds your eyes meet again and you take her hand in yours now.
"The answer is yes. Awnga lu muntxa si! We are mates.. Let it all out on me, my dearest..." <3
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*This is only seen in a deleted scene of the first movie by the way. It is a poison-induced psychedelic ritual. Probably less dangerous than Iknimaya which hunters have to go through at least.
https://james-camerons-avatar.fandom.com/wiki/Dream_Hunt
**A word made by a friend and me.
It's a combination of the following:
snomo [ˈsno.mo] n. private space that one can retreat to
nrr [n·ṛ] vin. glow, be luminous
This part of the anatomy is heavily inspired by creepy_gun's work here: https://www.furaffinity.net/view/50376761/
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A wonderful artpiece by \r\n\t\t\t\t\t
| \r\n\t\t\t\t\t\t\t\t \r\n\t\t\t\t\t\t\t\t\t \r\n\t\t\t\t\t\t\t \r\n\t\t\t\t\t\t\t\t | \r\n\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\tGeFauz\r\n\t\t\t\t\t\t\t | \r\n\t\t\t\t\t\t
Some more variants: https://inkbunny.net/s/3579557