As long as no one felt insulted I think it's okay, indeed we shall knew when to stop however.
Yes, technically a date, on that matter, Ichika invited Dan for the festival. Dan said he has a date incoming, but promise he will came later.
In a twist, Dan indeed have a date... with Utsuho, in the festival in I.S.A., and meet Ichika later. (So Dan is not lying
)