Help for my friend i dont no what to do?

well my friend she came to me and asked me if we could talk..she told me that a senior(shes a freshman) came to heron fb and asked to have sex ..she wasnt sure..she told me hes cute and all...he just wont leave her alone about having sex with her,i told he wasnt worthit(shes a virin)...i dont want to see something like this happen to her that she will later egret:/..i kinda like her.but im not going to tell her..i nee help