I really want to know too
I found a manga called "Koi mo Sugireba" which seems to be about them but no translation? Idk ╥﹏╥ I want more of them as well T^T
Idk how to edit my previous comment but more research has led me here:
https://rawxz.to/manga/%E6%81%8B%E3%82%82%E9%81%8E%E3%81%8E%E3%82%8C%E3%81%B0-raw-free/%E7%AC%AC1%E8%A9%B1/
Omgggg thanks! I hope someone picks it up for translation
Is there a sequel or story for the other couple?