https://www.dlsite.com/maniax/work/=/product_id/RJ01331172.html
https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_461180/

A silly couple is bored with their current sex life, but once the dum dum girlfriend uploads an old private sex video of theirs to a porn website and sees how well received it is, and how much she is having a good time in said video, she is in pure bliss from getting such positive feedback and how much cash the video could net them. Boyfriend catches her and notices what she did, he gets mad for being stupid enough to upload a video of theirs to a porn website without considering the ramifications on their personal lives, she apologized but kinda slides a remark he was the one who brought up they had this video in the first place; before he gets mad again, they both notice the increasing views, revenue stream and comments asking for more; that's when both agree to spice up their sex life and film it, to post it online.

After having their amateur porn stars adventure, both of them decide to resume their sex life without cameras, since they did find a way to rekindle their sex life and believe they can keep up without third parties watching them online, and have gotten enough money to have a good time outside.

Quite the original take, I like it; several other works would take the Netorase, or Netorare, or Swinging route with a couple facing similar issues.

Base +8, wenx° +24, Nakama_P +6, GenerationKamenRider +6, AininChase +7

[Synopsis]

A couple is troubled by their sex life becoming monotonous.
The girlfriend posts a sex tape from when they first started dating...
The video goes viral and with the revenue rolling in, they find themselves unable to back out.
Responding to requests in the sex tape's comment section, they try unusual acts they'd never do normally but the play grows increasingly intense.
What will happen to their stale relationship?

Base +28, nuts987 +14, wenx° +24