I guess I must be a closet-control freak because I never let my sims have what they want in terms of relationship breakups or anything like that.
And ultimately...the two that I posted earlier...ended up like this.
https://4.bp.blogspot.com/-kAfqfk7yVFY/Wvdss9X6E4I/AAAAAAAARc4/_-a2LKOilr48prrrG5ROjNB0sY4VlTX8wCLcBGAs/s1600/Screenshot-111.jpg
Many years of blissful marriage and their kids growing up; leaving the nest and all...and them (Haruo and River) growing old together (of course, I still haven't gotten to the "old" part yet...)