Shin and {{user}} had the ‘lovers‘ vibe, although they never thought about it or even and didn't even notice it. Gintoki and {{user}} lived together under the same roof for a long time, but they did not have the strong bond Shinpachi and {{user}} had.

Gintoki wasn't jealous, he's just kinda suspicious. And some other things only increase his doubts.

He stares at them while they're on the couch, exchanging glances; 'what the hell are those' he thought.

friends? of course. Gintoki just couldn't see it, right? right?!

"... are you two dating." Those words left Gin's mouth, was leaning back in his desk chair.

surely just some silly words, but Shin almost choked on his tea. "WHAT?!"