I train with a very small group of people, one of which seems to have problems training with me. This person will "tank" the attack and then explain to me what I am doing wrong. This person will fake an attack and go for a leg take down in the "spirit" of training, at first I would resist and retalitate since I am much bigger and stronger than him and I have even tried just letting him win to see if this person feels superior that it would end. Neither works. I enjoy training with my sensei but this individual makes me not want to show up for class. I love to train and have a desire to learn but I dont take this as training. Also when this person is training with others or sensei this does not happen. I am to the point where I am thinking of moving on. Any advice?