Beautiful! I love your imagery.
As for your question from a chick perspective: If I got this from a guy I already knew liked me and I was remotely receptive to his feelings, I'd really treasure it. But I'd probably be a little intimidated by the physicality in the first lineunless it was pretty established that he's into me.
If I had NO idea my friend liked me and he sent me this, I'd feel confused, a little deceived that he already feels this much and hadn't told me, wondering if I misinterpreted it and too scared to ask, and very awkward next time I was around him. And the first line would then scare me a lot. It'd make him an unknown variable, essentially. That can make chicks flighty.
If she doesn't know, I'd reword the first line, tweak it to match, and give it to her as a friend poem. Make it about
who she is, rather than how she makes you feel. We like knowing we make you feel good, but we like knowing you like who we are more. She'll see you a little differently (in a good way) just by knowing you see her so clearly and like her so much as a person. Also, keep this poem so that down the road if things progress, you can show her how you really felt from the beginning and that would probably mean a lot to her.
'The hardest thing in the world is telling the girl you love that you like her.' -Lex Luthor