She's an attention whore and you'd do well to tell her that you don't like her flirting with stranger boys on such sites. Then shut up and when she starts to defend herself with BS about how you don't trust her... let her rant and when she's finished just say: "I've told you how I feel about it and it's up to you what you do with that information." Then, if she doesn't delete herself and stop all her attention whoring then dump her because she's an insecure twat that you're better off without.
Her quest for attention will only get worse as she ages. Her being on those kinds of sites when she's in a committed relationship is disrespectful and inappropriate and you will be looking after your own emotional interests to dump her (if she won't get off the site(s)) before she ends up meeting one of these player apes who are giving her the attention she is addicted to.
Last edited by Wakeup; 08-10-14 at 05:02 PM.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion