I am quite a talkative and bubbly person. I have been taking private lessons and my lessons is my teachers last private lesson for the evening. Some nights he asks me out for a drink after our lesson which I found odd but went a couple of times. He has since asked me to his place to meet his dance partner and his real life partner. they were both very nice we hall had dinner and drank shots of sambucca.Is this weird? He has since broken up with his partner, and recently commented I have lost alot of weight and he is jealous. It kind of made me feel uncomfortable. During my lesson he placed his hand on my backside and has been very touchy feely. Other students have commented to me the lines have blurred between us. What do I do?