In both story the Main Character meet accidently and build a Sexual-friendship, in both story the Leads were hurt by their ex-Partners and in the beginning the other lead is a distraction for them. But in the end they both get together.
Nothing Serious (2021)
Related
~ both relationships started out as just sex nothing more
~ both include a FL who does a podcast (although the podcast element is much less significant in NS)
~ both include a ML who is a writer, and both write about sex
~ both include sex scenes but HtS was much more explicit with actual nudity that happened more often
~ both FLs has supportive best friends who helped them through relationship struggles
~ both the MLs fell in love faster & harder, while the FLs were more hesitant
~ both FLs were severely hurt by their exes
-In both , the main characters have sex "without feelings"
-15+ scenes
Differences: in Nothing serious, the main characters are not virgins: the FL is just tired of the dating scene and the ML is a journalist writing an article on sex.