is that not really messed up dude?
Most Helpful Girl
It sucks you had to see that. Try not to dwell on it though. She's technically not doing anything wrong since you guys aren't together anymore... but if she knows you're around it's insensitive to go on like that when the break-up is so recent.
I think it'll be more helpful to focus on moving on and leaving her and that relationship behind rather than worrying about what she's doing in her life. I'd avoid her when possible.