You already know something is off. You sent a paragraph. They sent back a thumbs-up. You asked if everything was okay. They said "yeah why." You stared at those two words for forty minutes, and then they sent a meme at midnight as if the conversation had reset.
Attachment avoidance is an adult relationship pattern, not an explanation for every short reply. In laboratory research, people higher in avoidance could suppress separation-related thoughts and the arousal that rides with them. Researchers call this deactivation: quiet under pressure can be regulation that works, not a message aimed at you. Under relationship pressure, withdrawal can become part of a demand-withdraw loop: one person presses for contact or resolution, the other creates more distance, and each response increases the other person's alarm. Couple research links the loop to lower relationship satisfaction.
That makes urgency expensive. A long message can contain hurt, history, a request, a question about the relationship, and an implied deadline. The receiver may respond to one part, delay the whole thing, or retreat from the pressure. None of those reactions proves what they feel about the sender.
The useful change is clarity. Reduce the message to the one thing that needs an answer now. Keep the rest for a conversation that has enough room for it. This is not about becoming easier to ignore. It is about making the request impossible to miss.
