Nah, bad mojo, that's what happens if you try and manipulate people into missing you, when push comes to shove they leave you hanging and it's awkward as hell.
Had v similar with a former FWB who wanted something more serious, long after she had already been told no and we'd cooled it she started with the wee poems and things, and it SOUNDS nice until you clock it for what it is, seriously pushy manipulation designed to get an emotional response. So after a point it just makes you seriously uncomfortable knowing that's the motive behind everything.
So, Yeah i'd just leave it, don't reward manipulation with attention. Failing that just be straight and say you didn't appreciate the pushyness of what he said, wrapped in flowery poetry as it may be.