Songs of Experience...err....Hypothetical Situation 1

Well, sexy, I admit I share your dilemma. . . I mean the short answer is, you find a more or less creative way to make them stop, but I know it's embarrassing because the other day I was at the lunch table with my favorite male student (the one whose band I play in) and these two freshman girls came up and sat beside us giggling and smiling and introducing themselves like they wanted to flirt. I felt super uncomfortable and torn between thinking, oh it's just innocent, or maybe they want to talk to my student or I don't want to seem unfriendly, and wait, this is messed up. So, I gave them the cold shoulder and later caught one of them throwing food and sent her back to her table with a reprimand. Clumsy, I know.
Even more interesting, and much sadder, one of my most talented honors students has been absent for the last month, and it turns out that her softball coach is accused of an affair of some sort with her. She had come by my room after school early on in the year, and I'd felt uncomfortable being alone in the room with her, so I took the conversation into the hall. She wanted to tell me about her mother who's in jail and her father who's out of the picture; she lives with her grandparents. She was clearly seeking adult attention. I wish I could've protected her in some way.