Responses
That's what you got out of the chapter? Cirrus clearly misses him. The way he was looking out the window made that clear. We are unsure why he isn't coming out. It could be because he's guilty over their breakup/hurting Skylar, knows he's leaving in a month and doesn't want to hurt Skylar, or anything else.

Sky needs to leave Cirrus alone bro, that dude clearly doesn’t want to talk to you, let that dude catch a break from the drama GO HOME