Responses
It's obvious actually, otherwise the title wouldn't be Glen. Unless this author intending to make a plot twist and out of the box ending..but usually BL manhwas aren't that complicated. I know that Vincent will just stay as friends in the end, it doesn't seem like the author intending to bring out the love triangle feels anyway...maybe just a one-sided crush on him.

At first, I suspect the stalker is Glen. But The Prof action also suspicious. So I dont like both of them. Accidentally I read that in the end MC will choose to be with (XXX). I'mma so mad, because In my eyes Vincent should be the one MC choose T_T (Ah, I regret how I found the spoiler that I didn't want to know before by accident) But, It's okay maybe In the next chapter Glen or The Prof will change my mind.