A well known bassplayer, who I had been taking lessons with, invited me to his concert at Philharmonie, before that we had nice conversations about music and he really liked my music and maybe we can play someday bla bla. After the concert we were in a backstage room „checking out the steinway“ there, I played a bit and it began to feel weird, so I stood up from the chair and he suddenly kissed me on my cheek saying „you play nice“ (kind of, it was another language 😉 ) I was kind of shocked and really disappointed, and we just went out and I later wrote to him that it was not ok.