Here's what I learned from the japanese series and novel My Beautiful Man. Arrogance and Having low or almost no confidence are not two sides of the same coin. Both are in the same side of a coin. Always assuming what other will think is also a form of arrogance because you're acting as if you can predict what others will say or think. A good amount of wariness is good, but too much is bad.
This guy needs a sassy girl friend that can tell him "my friend, you're the red flag in this relationship"
I would actually like to commend the author for depicting what I deem an accurate anxious attachment style. Like, I've seen people like this. That friend that easily brings up breaking up with their boyfriend not because of confidence because they think it's the best for their boyfriend because they're just a burden. The ones that were actually controlling how their partners act, unconsciously, especially around others.
The fact that it's his first relationship is also a quite a pattern I see. They are also still in their first months (?).
Will let this marinate for now. All this anxiety arc is triggering my anxiety too.