Thoroughly enjoyable and I thought extremely impressive. A thoughtful, well-considered series of vignettes, nicely rendered and increasingly heart-warming despite their seemingly inevitable "bittersweetness".
The characters in each segment were well observed and truly beautiful both inside and out, and the interlinked stories smoothly and sweetly developed, building especially well in both their intensity and sadly, at this stage of the novel at least, their seemingly ultimate poignancy.
Incidentally, regarding the separation at the beginning. The marital relationship seemed somewhat shaky from the start, the wife harbouring underlying resentment at having sacrificed her career to become "the homemaker" versus the husband who relationship-wise, rightly or wrongly, put too much time into a budding business start-up which was the couple's sole means of income.
However, I felt, even in apparent jest, the wife seemed to be, to put it mildly, both strident and unnecessarily truculent from the very start. The husband had a legitimate reason for answering the phone, the principle behind which drew first and ultimately fatal blood between the two of them. It was the heated argument which caused the husband's impotence and it was the wife who set the ensuing adventure in motion by verbally, if not physically, kicking the husband out of the room.
None of that truly justifies or condones the husband's subsequent infidelity, but it does, to my mind, go a long way to explain how disaffected he was with his wife and how unusually vulnerable his ego and libido was to the almost immediate onslaught of increasingly appealing, wholly unplanned, temptations to which he unwittingly opened himself up to almost as soon as he left the building in search of the gym.