A person lies awake in bed, restless, and can't stop thinking about someone. That's the whole scene, and the poem keeps it small on purpose. The speaker has been tossing and turning "for a long time," and the sleeplessness seems to come from one question: is he awake too, thinking of me?
The feeling here is a mix of longing and uncertainty. The phrase "maybe, just maybe" is the heart of it. It sounds hopeful, almost like the speaker is bargaining with herself or himself, wanting the answer to be yes but not daring to assume it. Nothing suggests the speaker knows how he feels, which makes the wondering more tender and a little vulnerable.
The mood is quiet and intimate, like a private thought at night. The short lines and the sentence that trails off without a firm ending mimic the restless mind itself, circling the same hope without settling.