Chapter One Hundred and Twenty: Sex Education

S7 E3: After a lesson in sex education leaves the gang more confused than ever, Veronica (Camila Mendes) decides to organize a make-out party at the Pembrooke. Elsewhere, Jughead (Cole Sprouse) attempts to help Ethel (guest star Shannon Purser) out of some trouble only to find himself in hot water as well. KJ Apa, Lili Reinhart, Madelaine Petsch, Madchen Amick, Casey Cott, Vanessa Morgan and Drew Ray Tanner also star.