She said she's going to tell him she has a boyfriend.
After being yelled at by MN for essentially two pages. Which doesn't really support your initial statement of "do none of you have male friends?". We do. Some of us are male. And it's not the point being made.
And then go for a drink as planned in the new city where she knows nobody else but has made a friend.
Nobody has an issue with this, apart from some people being worried on her behalf that it might be awkward as all get out.
Again, the problem isn't the meeting for a drink. The problem is not mentioning the DP, despite supposedly having many conversations in person and over text with this new guy, and reciprocally inviting each other for drinks, alone, when her DP isn't even in the same town as she is, and STILL not mention that she does in fact have a DP, even when one of those drinks is saturday night drinks together, which is pretty much the stock go-to when it comes to two single people meeting for a date.
If I was the new guy in this scenario I'd be thinking I was in luck, and getting ready for a fantastic romantic date on Saturday, and it's cruel to let him continue thinking that, never mind the disrespect being shown to the DP, who's probably already had worries about his GF moving to a new place.