Who else doesn't know about Carol yet? Aside from Daryl and i guess some redshirts, are their really enough to split into a Team Rick/Team Daryl? Carl knows, so does Maggie, Hershel, they seem fine with it so far, Glenn and Tyreese sister might not know yet but being sick themselves they may see things from Rick's side. I don't think Michonne would care that much, not sure how close she was to Carol, we are pretty sure Tyreese would at most only be mad that he didn't get to kill her himself.
Beth? Who knows, and Daryl may not want her on his team.