The concept of "waifu" and its meaning is vague in nature, since there's no official definition to it, more often than not it'll depend entirely on the speaker to apply it specifically to themselves... and to top it off I doubt that most people are crazy enough to take the connotation of it sounding like you're married/want to marry that character, which makes it even more confusing (lol).
Most of the time a waifu appeals to me aesthetically, so the virtues of character design is often taken over the likes of characterization and personalities; if the character appeals to me it'll be a case similar to that of "love at first sight"... right, that's probably my standard to calling a character a waifu... one that appeals to what I value the most, with heavy empathize on appearance instead of the internal mind.
That's weird though, sounds like a sex-buddy thing of sort... like "hey you (appearance) appeal to every possible areas of my preference and interest, let's smash (bro)"
It doesn't quite feel like the case here though?
I've long since given up on (oh here it comes) 3D girls, even without experiencing the idea of romantically or sexually being in love, I guess it's not so much of "ahh 3D girls are the worse, they _____ and _____" but more of the feeling that it doesn't feel to be worth my time, even though those are excuses that I've used, I guess what I desire more with someone of my opposite gender is to just be close friends... though that's probably to save the hassle of being involved in a different way...
Point is that, disregarding the logistic of how it even works (the realm of 2D and 3D) if they were a real life person, by my method of identifying a waifu, naturally, I would date them... It'd be more interesting if we're just really good friend though, like a soulmate, but isn't a romantic partner? I don't know, maybe my idea of a waifu dictates that thought itself, maybe seeing too much of the things that I'm bias towards equates in seeing too much of myself? Maybe it's just the idea of having an individual that share your ideals, your thoughts, mayhaps even your action make it feel like the two are better off being really close friends instead of being in an intimate relationship...
Of course this is talking about the existence of a "real person"... If said waifu still exists in the 2D world, then no, because that would mean I'd have to be on some level of insanity to believe that I'm legitimately dating and communicating with them tulpa intensifies
Actually, the way that I use waifu represents a notch above best girl... even when they can be use interchangeably, a best girl would be someone who I identify from the crowd of a cast of an anime and point "That is the best one out of all of them"... So yeah, there is definitely some level of affection put into the notion of "waifu", I think dating them would be of natural process too...?
tfw most of the content here centers on identifying wtf is a waifu and aspi said he used it as a catchy title