Really love reading your posts so much, you basically summarize what all of us pichi fans here are thinking about in such a precise, accurate way!
Even though I too feel scared of my overt expectations from pichi, it's really true they are not trying to clear our suspicions about them at all.
I am sure they know how so many people are speculating about them dating IRL, so if they are really not dating they should be bothered about it normally, because couple or not, I believe they are very close and good friends at least, IRL, so if they aren't really a couple, such dating rumors might trouble their friendship, in spite of which they aren't trying to clear things up making us more confused and doubting instead.
Some of the recent behaviors which make me truly suspicious and not giving up hope on them are:
1. YIN's post on confession day - pichi cap, chanel watch, why reveal them like that suddenly?
2. On YIN's bday, LDW on vlive chat, rushing by saying, "Hurry up, friends!" as if he is in a hurry and needs to go somewhere else.
3. LDW's reaction to "Me After You" song and when he says, "If I was an artist, I would sing this song for my lover" that has even, only LDW fans doubting him to be really dating
4. When YIN is asked about whether she wants to work with LDW in another project, she completely skips the question and starts talking about her character Jin Shim in Taiwan Conference for Mirae Face Mask
Like Seriously? Especially the last point, was a great chance for YIN, to do away with all dating rumours with LDW, if she/they were bothered with it because they aren't a couple IRL.
Another thing I have on my mind lately is that, LDW seems to be involved in a lot of projects recently, without even taking much rest at all, i can't help but think, he's actually thinking of probably settling down and get married with his lover, so he's trying to do as many projects as possible just right now, because after you have a family and all, responsibilities and some restrictions will start coming into the picture, according to what I understand about the Korean entertainment industry...
The above para, is pure speculation on my part, not so sure about this... but the other things I mentioned above, are making me really doubt them, because I believe they had many chances to clear things up, in case nothing is going on between them IRL... but they are not doing anything in that regard but instead doing some such things which makes us doubt them even more....