Pulsar

A pulsar calls in measured beats
Across a time and distance far
When joined as one, we are complete
One pulse by merging our two hearts

No tidal swirl o’er tropic reef
This madly spinning neutron star
Confirms my strongly held belief
Our being lives within one heart

Image source: NASA and ESA(Hubble Telescope), via Astronomy Picture of the Day, The Swirling Core of the Crab Nebula (with the Crab Pulsar, the rightmost of two stars just below the “swirl” center)