I cringed a little when she starts hitting on her and both ahem go to bed. Look kiddo, you just met that woman like half a day ago, so even if you have a big fat crush on her that is some serious leap of faith. Also how a married woman can be so innocent is beyond me (maybe love does make people do stupid things).
Anyway aside from those, this manga is indeed well-executed. I love how she told her to wait until both of them becomes adults and I assume the last last panel shows that she already divorced and is trying to find a new place (though IDK why I remember her having kids and for a moment wonder what will happen to them, but I guess I was wrong). 2018 is gonna be the year of age gap (and probably incest) haha !!!!