I once had someone jump into my party with all 2* gear... and a faust. I would have thought nothing of it if they weren't clearly new to the weapon. I helped them the best I could but that only goes so far.
Also every accidental death on spikes after an arena finishes ever.
I got into a group the other day right before the terminal and the party leader said something along the lines of "a girl. you look cute" (im in 0* feminine gear). He seemed infatuated with my character... asking if I was ok when my health was low. His friend also commented how I grabbed a large cystal, "a girl had taken the better crystal."
We get to the clockwork terminal and then people start asking to be put on tabs, not getting on elevators and all that. His friend whispers "i think he likes you." I simply said nothing and went back up to Haven.