Re: The Budo Teacher - Student Relationship
I think this depends entirely on the teacher and the student in question. One of my Sensei dates his students. His current girlfriend who takes him as Sempai, is 23 years older than him and he has been a serial dater in my local Aikido scene. Later he moved to a new dojo and stopped teaching because it gives him a lot more freedom in his Aikido romances.
My current Sensei is a very nice 63 years old woman. She is endearing like your grandma, joking around with you all the time but also gives a lot of good advice aikido- and life-wise.
When I was in Richmond I used to go get drunk with my Sensei and call him names. But he is one of the people I respect and love the most.