He's very clearly inappropriate with her,in front of BFF. And, in front of other people,because they've picked up on it.
If he's that obvious with people around, he's been just as inappropriate when they're alone.
Julie is in the wrong as well. Kids sometimes do the wrong thing. That doesn't mean she isn't a complete victim here. 16 is very young. Old enough to know better, but too young to truly understand their own actions, and just how incredibly vile his actions are. But he, as a 60 year old fully grown man? He does know. I don't care how goofy,or socially awkward he may be. He's halfway intelligent. He knows.
I would also file. I couldn't be married to a man who thought this was ok. I would be scared for my grand babies. I wouldn't trust him around them.
Something that I'm not sure has been mentioned..another very good reason to file? 16 year Olds constantly text,call,communicate via apps,etc. They also know how to hide things on the phone, so that BFF didn't see any inappropriate pics, doesn't mean they aren't there. And messages. He may delete his..but I'd bet she hasn't deleted their communication,the apps,etc. She may have irrefutable evidence of his intentions,and actions. If I were BFF, I wouldn't stick around for the legal fallout. Especially since she has had one foot out there door for awhile.
I mentioned cameras earlier. However, the more I think about it, why bother? She's seen enough,with her own eyes, further evidence that he's being inappropriate with a minor isn't needed.
Also..the period blood,in the bathing suit? Her asking him is so incredibly inappropriate, that my heart hurts for her. She's so incredibly damaged, and in need of help.