Hmm, honestly, the plot, while straightforward enough, kind of made me want a bit more backstory regarding their prior relationship.
I mean, yeah they just had lots and lots of sex, but I'd like to have seen some of it...?
And it kind of ended with them just returning to their prior relationship anyway.
That is true, but the premise and plot of the story is pretty straight forward. Guy and girl used to date and pretty much had sex all the damn time. Girl got sick of it so they broke up. They meet again and she realizes that she really wasn't sick of it at all.