I think maybe I get where Don is coming from. After all, he never had an exclusive thing with her. If she was seeing other men plural but still wanted to keep their date for this trip that would be ok with him I think.
Now if her new guy really dumped his girlfriend for her but she's not ready to be in an exclusive relationship with him, that's kinda between the two of them. Her not telling him she's slept with Don is pretty sketchy but seriously, what kind of idiot must he be if he doesn't figure it out?
Don I think you've known all along that Wild Girl wasn't a long term choice for you, but that she gave you a taste of the companionship that you crave. Just go enjoy the company and move forward.
