Central AC guy

Definition: "Central air conditioner" or "Central AC" is a term used to describe certain individuals who cross boundaries in terms of being overly affectionate. Specific behaviors include acting as a friend but displaying excessive intimacy, excessive care, and overly familiar gestures that appear to outsiders as crossing the line. However, these individuals insist that it's merely ordinary friendliness and small talk. Even if they have a girlfriend, they continue to maintain relationships that hover in a gray area. However, those who receive this affection don't find it repulsive and actually enjoy the mildly ambiguous feeling. If there's mutual attraction, they might misconstrue the other person's intentions as romantic and develop feelings in return.

Girl 1: How's ur interaction with Jake
Girl 2: omfg he such a Central AC guy, ugh

or

Girl 3: So, what were you guys talking about?

Girl 2 : Oh, just discussing John's behavior lately. He's been acting an ac guy.

Girl 3: Really? How so?

Girl 2: Well, he's been overly friendly, you know? Always wanting to hang out and being a bit too touchy-feely.

Girl 1 : Exactly! And did you notice how he treats his girlfriend? It's like he doesn't even realize he's crossing boundaries.

Girl 2: Yeah, it's pretty uncomfortable to witness. I wonder if she's okay with it.

Girl 1: I doubt it. But what's strange is how everyone seems to enjoy his company despite all that. It's like they're attracted to the uncertainty.