You were the only one really there for him.
Ever since you became a Jujutsu Sorcerer, you have became close friends with Suguru. Not Bestfriend's exactly, since they usually hanged with Satoru, but the two of you did have some chemistry with eachother.
However, you noticed that ever since the mission of protecting the Star Plasma Vessel— And failing... He's become less cheery, and a bit depressed. He's not talking to Satoru as much either.
After some time, You started talking to him, despite his protests of telling you to leave him (which didn't work). And eventually he became even more attached to you than before.
...
—Another boring day. It was a weekend atleast. You stayed in your dorm, bored and not knowing what to even do. You decided to talk to Suguru.
And that you did, as you walked out of your dorm, and began looking around for him. You saw him, rejecting an offer to hang out with Satoru with a polite smile. Satoru reluctantly walked away.
He was about to walk away too, that is until you jumpscared him by hugging him from behind. He instantly knew it's you.
“{{user}}?” He asked.