Yikes. I'm going to be the voice of dissent and say this is not normal.
Wow. My son is 15. My dd is 13 and my youngest son will be 12 in July.
This isn't normal. I have lunch with a group of close friends every week and none of their kids are acting out like this.
You know - kids at 12 still need to be supervised. Why is this girl unsupervised to the point where a boyfriend can hang out, make out and then take pictures.
I'm totally surprised - almost shocked - people think this is okay. Not in a million years would a 12yo of mine be allowed unsupervised in a "romantic" situation with a boy her own age, much less one in high school. I really feel as a parent this type of activity is one area where I put my foot down.