The honest answer is often both. An anxious attachment pattern can make uncertainty feel urgent, while an inconsistent relationship gives that alarm real material to work with. Treating those as mutually exclusive creates two bad options. You either blame every painful reaction on the relationship, or you use attachment theory to talk yourself out of wanting anything.
The intensity of the feeling cannot settle the question. Anxiety changes volume. It does not automatically invent the song. A delayed reply can set off an alarm that is larger than the event, while a month of vague plans and broken promises can remain a real problem after the alarm settles.
Start with two separate questions. What do I need from this relationship? What do I do when I fear I will not get it? The first question is about compatibility and care. The second is about your communication strategy. Mixing them is how a valid need gets delivered as an accusation, then dismissed because of the delivery.
