Oh...a confirmed yuri couple.
On another related topic. Sex between these swapping couple must be confused as heck. Unless kissing is forbidden during sex
What do you mean by "Oh...a confirmed yuri couple."? Its not new
Fuyumi and Akiho don't seem to actually view themselves as being in a regular dating relationship, so Natsuko and Haruko don't appear to quite recognize them as being lovers, either. Especially given how flustered Natsuko always seems to get at the prospect of anyone dating.
One of the pair from the previous chapter have claimed to be dating, but Natsuko was still uncertain at the end because the actions of the other one weren't really clear.
So this kind of is the first time a couple has come out and confirmed they're actually dating. And who act more in line with what is generally associated with a dating couple.
(On an unrelated note, I could totally see Akiho watching another romance movie, this time one with a sex scene, and just like with the kissing, getting curious, and again just like with the kissing, Fuyumi going "alright, let's do it." And them still seeing themselves as really close friends that just happen to enjoy having sex with each other. There's an idea for a doujin.)