Eight Hours (2022)

Both dramas are about characters entering a virtual reality game world that blends with real life and involves real life and death situations.

Traveling between worlds
Fl fan of ml
Though divided by separate worlds fl and ml begin a relationship
Fl "marries" ml
Fl partners with ml to save his life

Both have male and male leads meet not in the "real world" In Double love they meet online in a game, In Eight Hours they meet in a parallel fictional world.

The both have a virtual reality. The leads have to figure out who the bad guy is and work to get back to the real world without getting killed in the virtual one.

although i havent actually watched the drama I think it might bc a similar story line bc it features diff dimensions/diff worlds