This is the second time Betty and Jughead try to have sex and the first time they did so without being interrupted. It seems that teenagers are really sexually active in this town, unlike the usual law of being at least 18 to lose your virginity. In case you don't know, Betty was about to tell Jughead that she kissed Archie during their breakup in 1:58. I can't believe she would hide that from him and I'm sure Jughead will freak out if he knew this