first words of phrases describe, in order
, the progression toward marriage: SINGLE, DATING, ENGAGED, JUSTMARRIED BTW:
The theme is the only interesting aspect of this mundane Monday mystery. It is a shame that such a theme was wasted on a puzzle denuded of clever cluing. Even puzzle neophytes and speed solvers would not be burdened by a dram of creativity.
As mentioned here before, "creative" and "easy" are not mutually exclusive.
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun