Terry, have you talked just to your daughters, or also to their beaux? The kid's only 15, and we don't want to terrify him, but I do think that, as you say, we should make our expectations clear.
I think you do want to scare him just a little bit, but just so he's afraid of what might happen to him if he crosses the line that has already been made clear to him. I agree that you don't want him to be afraid of you.
Yes, we had the "talk" with our older daughter's boyfriend way back when, but unless the daughter is on board with the plan it doesn't do much good. I have something of an advantage, since I'm six feet four inches tall and I lift weights for my health and I can intimidate the boys just a little. It has worked a lot better with the younger daughter's boyfriends - so far.
I also think that the "talk" doesn't have to be a big huge hairy deal, just a few private moments to let him know that you trust him to behave but if he doesn't that you'll be "very disappointed" with him. (This is where you lean in close, stare deeply into his eyes, and let him know about your cousin in the construction business who specializes in pouring concrete.)
