I’m guessing by the comments that the One-shot ends with them breaking their relationship.
This is a really well-written and mature romance...pretty hard to find in manga, especially ones that can convey natural conversations and realistic thought-processes. Bonus points for being about college and sexuality
Though this does make me wonder, I get that Japan is more conservative and all that, but I imagine gay/bi people is a taboo that was broken a long time ago in college-life, so does it actually make sense their “so rare to find another not-straight friend, let’s date” mentality?