Hmm, I don't know if I even have the right to ask that,
so please answer as much as authorized : do you know :
If there exist fanfictions with three-ways relationships (with whoever you want) in Eva, with romance involved( something that may have sex in best cases, but not put in there for the sake of sexual arousal of the reader !) , I mean where three-ways are NOT depicted as acts of lust and so gross it makes any non-intentional reader want to puke ? Intentional readers may get aroused by whatever they want, but here the principle would be to render such relationship as as beautiful as classical couples.

So strong langage is indeed forbidden, as usually when someone does use such a language, fuck takes the precedence over love. Yep, I bet that sensibility isn't very commun.
I read some here were rather pleased to imagine Shinji x Rei x Kaworu, less Shinji x Rei x Asuka. Logic would need both of these kinds to be set post 3I indeed.
By the way, I wonder why I can not find sex scenes that are both explicit and without strong langages ? As always, people need sex, which is okay, but they can't put out of their mind the idea that it is 'dirty', so they add the vulgarity, as a way to share that feeling. Just like 80' 's porno compared to nowaday's one.

Do you know of some that could fit the description ?

I've not gone out of my way to study Eva lemons; however, there is one point I want to take up.

It is a standard piece of advice when writing English prose to reach first for the Anglo-Saxon rather than the Latinate vocabulary; to be direct rather than circumlocutory; and to mirror how you would speak rather than disappearing off into flights of sesquipedalian purple prose. In the matter of erotica, that advice on good style will inevitably be at odds with your other constraint.

If I understand well, you're saying that it is difficult in erotica to be both crude/direct, and include romance ?
I think you misunderstood me a little : I am not against being 'direct' or crude, but I am sure there are lots of ways of being direct. I don't know for english prose, but in French, in the eighteen century there were libertine authors like Crillon son, Sade(you may like or not,), or Laclos, whose language was very polite and full of délicatesse, yet very direct.
And I am talking about people I actually haven't read, except for Sade. I read saphist writings whose author I can't remember, whose prose would earn prices, and invoke all the body stiffness you would have gather in a decade, in split second. An oeuvre d'art.
I am certain what I would like doesn't entail per se, stylistic problems. Maybe just talking about experiences ? Assuming people do have from time to time powerful and rewarding sexual experiences and they do feel love from time to time too.
Saying 'sex' isn't derogatory at all, why would talking explicitely about it would be so ?
I don't get 'mirror how you would speak' : what do you mean ? Talking about dialogs ?
Something stranger : I like your english insults, but strangely enough reading 'cum' disgusts me more than saying 'foutre', which is the exact translation in French. The same for the word 'crotch'. It is possible my newness in english makes me feel things as more vulgar as they are really.

English being the bastard hybrid that it is, has what might be termed a "class distinction" between what were the pithy, earthy, vulgar language of the commoners and the high-flown effete language of the nobility, back in the days when the language was coalescing towards its current form. Effective written English inclines to the former, rather than the latter, save in the niche of precise technical vocabulary -- and even there the matrix in which the technical terms are embedded should still be plain (undecorated) English.

It's not so much that there is a distinction between romance and erotica -- it's that there's a distinction between those and clinical or medical descriptions (which latter would invoke a technical vocabulary of Latinate terms, and sound out of place in normal usage, even between medical professionals, in the intimate context -- for all that those terms would at times themselves include 2000 year old euphemisms).

As to particular words -- 'cum' used in this context is a modern USAn neologism and that pretty much says all there is to say about it. OTOH 'crotch' simply means the junction of a fork, and applies equally to the place where a branch juts from the trunk of a tree, but has suffered from its use as a euphemism, just as did a Latin word meaning 'tail' all those centuries ago.

I thank you for your explanation, it was very insightful. Maybe French is actually a better langage to mix erotica and romance.

I'm writing a AxS fic called Advice & Trust that unplanned by me has drifted strongly towards AxSxR. Rei has in fact fallen rather well in love with AxS, but because she cares for them refuses to make a move, lest she disrupt their bond with each other.

She won't end up with them, alas. I've got other ends planned for Rei, but if I hadn't, I would have been quite happy to write a 1-2-3 set-up if I hadn't already plotted the ending. A fair number of my readers were quite disappointed that I wasn't pursuing that road. To be fair, I wish I could too, but the plot I've planned requires they not.

A&T is very much not a lemon despite AxS having a quite vigorous physical relationship: the point of the story is that they can sleep together, not what the details are. It's up on FFnet, or I post it first at SufficientVelocity.com

Interesting. Yet, I wonder why it didn't seem more natural to show a working threesome, rather than a failing one. Well, maybe because in real life, it doesn't use to work that well. Poor real life people, you can't live up to my desires !

I was sorely tempted, really. They would have worked out as a trio just fine, given how I'd built it up. I just need Rei paired with someone else for the plot I've got laid out. I have given some thought to writing a 123 trio in my next story, but that's a ways off if so.

So ... gambate kure for the next, I look forward to it. I've read the first, though. These are very naughty children, you're depicting ! If only I had met such boys and girls, god knows if I would remember these years much more happily ( I'm 22, so I do remember them vividly yet ).
What hindered me in your fanfic', is that in this day and age, girls just won't go to town that easily. In fact, they just seem to be disgusted by that thought, while acting all like they were all grown up women. I think Asuka in the series is a most perfect symbol for th ambivalent relation to womanhood and sexuality most girls of that age nurture. At least I know in my land(France), such bitches were very frequent. I've never met a girl under 22(that is, no one until now) who has't a completely messed up relation to love or sexuality. And many of these girls had perfectly sane parents. Well, I met once really open-minded girls on this subject, but these were lesbian, too bad
Everyone, please don't mind me, I just felt good talking about not so good'ol' memories . . Though I would love knowing if some of you had quite different childhood/teenager experiences by MP.