The true chad move is to go along with the plan till Natasha is ready to ditch Roger for the MC and then tell her to fuck off anyways. That way not only do you prove that they are terrible people who don't really care for each other, but you also don't end up doing anything immoral or illegal.
Because honestly that whole scene is fucked up, probably the worst thing the MC can do, closely followed by the Elaine guilt path. And I hope, by the end, there are some severe consequences for everyone involved in that mess.