dh will be 31 next week. he's a PhD student and a TA. about a month ago a 19 yo female undergrad (not his student, but in another section of the class he teaches) approached him in the elevator flirtaciously, then found him on facebook, became "friends" and exchanged numbers. They text and talk over the phone numerous times each day and occasionaly eat lunch together on campus. DH has also given her rides home from school since she doesn't have a car. She calls and/or texts dh nightly asking him to come and "hang out" with her. He's never done this...at least not to my knowledge. I've told him that I do not approve of this relationship and that I think it is highly innappropriate. He says that when I put it in the context of him being a 31 yo married male with a kid, hanging out with a single 19 yo girl, he can see how that would be innappropriate, but they're just friends and she's "really smart" and they have "great conversations". I say that I totally trust him and everything, but that the risks way out-weigh the benefits in this relationship. All it takes is for someone to perceive foul-play and his whole career is on the line! I said that it seemed extremely irresponsible to put our family in that position since we're all greatly counting on him to finish school and get a good job. He says he has no other friends right now and guys his age are boring. All they talk about is football, getting drunk, and getting laid. And married guys his age can never get together and they only talk about their kids or bash their wives. I said I can totally understand his position, but that still this relationship is far too risky and COMPLETELY INNAPPROPRIATE! We just were talking about this again today right before I put ds down for his nap. When I came out of the room once ds was asleep there was a note on the kitchen counter saying that "if I need him, he'll be at the library." I really don't think I'm out of line here. I just don't know how to approach this situation without pushing him away and making him secretive. I just don't know what to do. wwyd?