The speaker lists everything a woman does that seems to say she's interested: she finds excuses to see him, stares into his eyes, laughs at his jokes, touches him playfully, and tells her family and friends about him. She even says no man has treated her so well. After each cluster of signs, the same line returns: "I'm just a friend." It sounds like the speaker repeating a label he has been given, or one he keeps telling himself.
The feeling is a mix of hope, confusion and quiet frustration. The long run of single-word compliments, from "Charming" to "Talented," reads like a burst of excitement, and "I float high above the clouds" shows how happy her attention makes him. But the final line, "Oblivious to the obvious," suggests that someone is missing what is plain to see. The poem leaves it unclear whether that is him, her, or both of them. The mood is warm, wistful and a little aching.