Sure, but that's a vanilla basic boundary anyone should know about. What I believe the other poster was referring to were boundaries which are fuzzy because men (and women) don't agree on what they will tolerate in an exclusive relationship.
A good example from here would be hanging out one on one with other men. There are differing opinions here on what is ok, so how is the woman to know what is acceptable without you telling her?
I guess that's up to the guy. If he wants to go exclusive with a woman who doesn't have the same values as him when it comes to that sort of thing, then yes, I suppose he should communicate that with her. Though, I do believe, in most cases, when the exclusivity "talk" happens, by that point, you do know who she is - what she's about......most of the time. That's part of what draws you to her, that's
why you want to go exclusive with her - because of who she is. You can have logical discussion with women, in fact you should have those discussions. Then, when you find out what she thinks and believes, and you agree, you go from there. If she breaks her own rules, if she's a hypocrite, if she's deceiptful, if she's telling you what you want to hear, then you get rid of her.
Sometimes women won't know any better, they'll believe some guy just wants to be her friend because he's truly a "friend", when you know otherwise. That's up to you what you want to do about that guy. To me, if he's really just a "friend" - even though he wants to **** her - I don't really care. He's not a threat to me, she doesn't want to **** him, she wants to **** me and me only. Desirable women will be surrounded every day by guys that want to **** them, when they go to work, to the grocery store, when they go to starbucks - 90% of the guys they run into will want to **** them. They know and have learned to defend against these men. If she can't handle herself....if she goes out and, after two drinks, ****s the closest guy next to her, then I will know, by this point, that she is that type of woman, and therefore I will not go exclusive with her. And this "friend" of hers, who will drop everything he's doing at any moment, in order to be her emotional punching bag, can only help me. He is by no means any type of threat to me. If anything, he will reinforce what a wuss bag he is, and that I am the desirable male.