hello!!! i do have some stuff :D i'll try to put as much as i can here but there are probably little crumbs all over the place (some of which have probably been lost to time sadly)
the clips anon is likely talking about here if someone's curious: clip 1, clip 2
there's also a clip i've posted of grian seeming a bit baffled by cub's hotguy exhibit here!
and a little silly edit of cub asking scar for hotguy merch and scar giving him All Of It Immediately
here is cub doing research (real)
he also wrote a hotguy poem for his museum!
cub also signed up for scar's velocité lessons (which sadly didn't happen), made some questionable comments about scar's tcg cards ("there's no shirtless scar on the card though" "takes damage but looks good while taking it") and generally was quite infatuated by him every now and then
cub's hotguy obsession is definitely more of a running gag, even in s10 he says he put the star shape in scar's hotguy fire works "because hotguy is a star" and lets scar basically scam him lol :D i think most of all this comes from scar and cub just generally being silly about each other. cub is scar's yes-man and scar is cub's hypeman always and often the other way around too. i hope this helps!!!