Why was that dude so dead set on stalking that other dude. Weird.

I mean first of all his probs the “dumb and dense” type of guy and he wanted to know wat his friend was up to and hes also probs hella bored and has nothing better to do n the “stalking ur friend who u think has bf or gf (but u dont know who) is something u lowkey see often in shoujo manga”