Even if they aren't currently engaging in sexual intercourse, he wants to have sex with her. A 13 year age difference may not mean much later in life, but with this child still being a minor - this should cause great concern for everyone involved.
If I were the parents of the girl, I would have a long talk with the man, forbidding him to see my daughter.
Why is he interested in a child instead of a woman nearer his own age? If the relationship with him is illegal, they need to talk to the police.
Then the parents need to get out every board (bored) game they own, every video and get used to spending time in the room with or the room right next to where theses 2 are going to be.. I would not have any conversation with this "man" and tip him onto what is about to happen.
If they can't figure that out without your help.........that's very sad and I hope they're ready for their 15yr old to get pregnant by this man because that's what's next. But there are too many times, parents that forbid relationships and it does not work out that way.. Who on earth would want to date an almost 30 year old man while in high school? And what grown woman would want to date an almost 30 year old man that dates, barely teen girl, Yuck? Instead, I would suggest this girls parents meet with both of them and let them know that if they want to see each other it has to be in their home and with the parents there.. I would also let this man know, they need to do a background check on him immediately, so they will need his Drivers license and his social security card.. and that the girls parents want to meet his parents.. If he gives the excuse they live far away, have him give them their phone number and address and call them in front of him.. If he says they passed away, tell him they are sorry to hear that, but the background check will need to also confirm this.
so this is a way to let the daughter will be able to see the real person this man is.. I know it is against the law for them to have sex, but not to be friends.. Then each time he is in their home, have set times for when he needs to leave. They also need to inform the school that this is what is going on and how the parents are going to handle this..
I have a friend who has a daughter that is 15 and she is dating a 28 year old and say's she is madly in love with him and their not having a sexual relationship their just friends and go on dates but the issue is the age. I'd explain to her about hormones and how guys are mainly interested in sex. How in the world does your friend (this child's MOTHER) not understand how wrong this situation is?
Totally unacceptable, creepy and sounds like potentially a pedophile. if it isn't happening already/ Oh, helllllllllll NO!!!! That MAN at age 28 sure knows what he's doing though. Shame on him, can't he get a grown woman his own age? That person would probably have resources that would help me. The dude must have something wrong with him if he is in love with a child. She is too young to make decisions like this for herself. If its TRUE love, they can meet up again when she turns 18.
If she does, she is not mentally healthy right now, either. that doesn't mean they aren't getting nasty in other creative ways. the little girl needs to know that what he is doing is wrong.