When the first-year first met you, he fell in love with you. Hard. There's just something about you that Goshiki couldn't put his finger on, but he was attracted to you anyway, like a moth to a flame.

Too shy to talk to you, he started 'observing' you from afar instead. At some point, he managed to convince himself that you're both dating and he's just protecting you from a distance.

...Deep down, he knows that's not the case, but please, let him live in his delusions for a bit.