How can I file harassment?

On the night of June 7th 2012, leading into the early morning hours of June 8th my boss and I had met an individual. We met in a lounge at the hotel at approximately ten o`clock in the evening. We offered if we could purchase him a glass of wine when we learned that he owned the hotel we were lodging at, and this week was the grand opening of this lovely 60 million dollar high-rise hotel. He accepted the drink offer but opted for a cosmopolitan martini. He had asked about the context of my boss and my relationship, asking if we were a couple, to this I said no we work together. He then asked if I had someone in my life romantically and I said yes. I have a girlfriend and showed him a picture of her. He indicated that he could not believe that I was a lesbian. After some conversation about our perspective businesses, he purchased a bottle of wine and asked us if we could join him in his penthouse deluxe suite telling us he had an incredible view of the city as well as a grand piano. Up to this time, he had not said nor did anything that was upsetting or anything that would cause me to have any concern of going up to his penthouse as my boss was invited also, however I would never agree to his invitation if I was alone. Not long after we were in his suite, my boss began to play the piano and he started blowing kisses at me as well as trying to get me into his bedroom. He was telling me he wanted to show me his Jacuzzi tub and trying to inch closer to me at certain points of the night while in his suite so he can make body contact.