can a humanoid foster a(n) mental or emotional state similar to that of a romantic crush, on thmslvs

?

this question is one that i raise due to a habit I've witnessed in another humanoid. It's a simple thing, maybe most people wouldn't think twice about seeing evidence of its existence anywhere that any handwriting has transpired. but i do find it odd, very odd, and am eager to call it disturbing, with the long-term level of self-obsession that ii see as evident in the habit.

the person at subject is a doodler. In any given situation that they find themselves in where they're obligated to some sort of obligation wherein they have a pen and paper at ready, they will most certainly and definitely be found doodling during the course of said obligation. however, instead of drawing pictures or whatever, maybe some of those 3-dimensional cubes that were the sh8t in, what - 3rd grade? 5th? ...also, do you remember how badass those hardcover math books were? - this person writes their name. very often usually their first name alone, a 3-letter word. i have never seen them doodle someone else's name. it's always only their own first name. Further, they'll cover half the page, the entire page, multiple pages - with their own name, written over and over. crap, i find it disturbing as fuck. i mean, as f88k.