"Being a single mom, at first it's a very challenging thing," Blair told People.
She discussed the difficulties of being a single parent in an interview the same month.
Despite both being in show business, Selma does not bring her beau to Hollywood events.
Ron is a father to daughter called Chloe, who is around the same age as Selma's five-year-old son, Arthur.
The American Crime Story actress is an accomplished rider and gets in the saddle every chance she gets.
For her ride on Wednesday, the star wore a pair of classic khaki jodhpurs with leather riding boots.
In the TV adaptation, Heather Duke is actually a male character who identifies as gender-queer; his given name is Heath.
Ron obviously did not join her riding, with the Daytime Emmy-nominated producer wearing blue jeans with a chambray shirt and high top Vans.
The couple have been romantically linked since February 2015 but Ron's identity remained a mystery until recently.
And for those wondering what on earth Blair will look like as a menthol-smoking stripper with a “bit of glamour to her,” here’s a preview.
"In this past year I've really had to be strong about [having boundaries].