The moment you stop being useful to a situation can reveal whether you were also welcome in it.

There is a kind of belonging that is really employment. While you are contributing, the warmth is genuine enough that the distinction never comes up, and it only becomes visible when you stop: after a job ends, a project finishes, or you step out of a role you held for everyone. Quiet at that point is worth knowing about, though it is not a verdict on you. Some connections were about the work, and that is allowed.

If you are between things, notice who keeps in touch without a reason to. Hold on to those people, and do not take the rest as a measure of yourself.