I concur with AntonTaro
They're kind of surrendered to the experience but stuck in a holding pattern right now, feeling it without being able to do anything about it.
Honestly, it's like falling in love for the first time and just standing there, wide-eyed, thinking, "Oh...this is it." They're giving in to these feelings-maybe after resisting, maybe after realizing their first read was wrong-but it's all so new and overwhelming that they don't know how to say it. Until the "download" finishes, they won't have the words.