However, there are boundaries.
As I chatted innocently with some gentlemen beside me on similar business matters, my poor friend was left to fend for herself on what appeared to be an uncomfortable and forced conversation. I eventually noticed she was desperately trying to part with her conversation. I did all the telltale signs a friend does to bail another out of this situation.
Step 1: In a clear and pointed voice to all around, "Well, we should go. Let's get the bill."
Step 2: Getting the bill quickly and attempting to leave our seats as he continued to talk to her.
Step 3: Leaving the bar as he tried to talk her into staying.
Giant clues here. If you actually make a woman/man leave the bar because you overwhelmed them with uncomfortable or unwanted communication- you're doing something wrong. Even more giant clue is if it happens to you more than once in an evening. And eyewitnesses have assured me this particular fella I speak about continued his detrimental pattern throughout the night.
Social cues are so useful. Can't we just all get along and drink in a bar in harmony?