Noooo! Yeah it would make sense that would hurt his feelings and make him come to a negative misunderstanding. If she at least told him...but Ichikawa is naturally pessimistic so... yeah.
Well other than that I kinda like that fact that before Ichikawa was the one who was concerned if she had a boyfriend but offhandly confirmed she doesnt have (and thats why he didnt react much here when Yamada was being asked). now HERE we have Yamada concerned about Ichikawa BEING concerned about the possibility of her having a boyfriend (and why she told him directly she doesnt)