Flirting Joe? And whether it's flirting or not is irrelevant since the attention is both unasked for and, at least in the first case, clearly unwanted. The instructor's behavior would be illegal in the workplace, why should it be any different in an Aikido dojo? How many incidents with how many different women will it take before you're willing to admit that maybe this guy has a problem?
It is clear to me that your hair is on fire. I don't know why you don't see it.
Fall goes, Winter comes,
Regardless of any want.
What are you to do?