I've heard that is the "new thing." Not that it's really a new thing, but it's become a much more common state for teenagers. I find it kind of disturbing, but I honestly find any kind of sex (including oral) outside committed, long-term amongst still-developing adolescents disturbing, too. Probably because I have my own 12.5, 14, and 15.5 yo children, and I feel they are FAR too young to be engaging in sex
I definitely see the potential for increased drama in school with these types of relationships. Not that we need more drama in school!