>Human x Elf relationships are the most common interracial relationships
Why? These races are so incredibly incompatible that it simply cannot work out.
>B-But elves are sexy humans!!
You fell in love with one of your teachers once, right? Or maybe you have a fetish for older women? I know I do But you know it'll never work out because women want men with more money and the gap in maturity is simply insurmountable, right? Imagine that, except instead of a maturity gap of a generation or two it's a maturity gap comparable between the timespan from the decline of heliocentrism to the fucking atom bomb.
Seriously, how can elves see humans as anything other than pets, let alone viable romantic partners? Humans are better off doing the do with orcs. Their maximum lifespan is what, 60? Not only is that only 2 decades shorter than that of the average human, in a medieval setting that's pretty much the same as the average human's lifespan. And that minor INT penalty leads to a far less insurmountable intelligence gap than literally living through the lifespan of entire empires.