"It's Good to See You" by Douglas Rudoff appeared in Daily Science Fiction on April 30, 2013. "An astronaut on a journey from earth to an extra-solar planet must decide if he wants to accept an invitation to spend four days with his ex-wife with whom he has had no contact for years."
The author reveals in his notes that the original title of the piece was "Four Perfect Days," referring to the clever device of the MC and his ex cycling out of cryo-sleep every eight years but with only a four-day overlap. Much of the backstory is left to the reader as is the ending--both good decisions, I think. 6 out of 7 rocket-dragons.