What does my family friend (male) mean by you are meant to be staying in my room?

I stayed in my family friends who were about my age. We stayed at his house with his siblings and his parents and my sister and I were given the guest room. I always stayed on my own and kept to myself. I noticed that whenever this family friend hears my voice he would come to where I was. He was always picking on me and teasing me. Whenever I open the door for him and his girlfriend he will be talking about me to his girlfriend like I wasn’t even there saying things like this was the girl I was talking about and this chick did such and such. One night he invited my sisters and I to his room to chill and have drinks and I said that this was my first time coming to his room and he said “what I was doing was not right and I am even meant to be staying in his room” lol. What does he mean by this?

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Why do some guys act mean to girls but will actually want to fuck them. I find that extremely weird
What does my family friend (male) mean by you are meant to be staying in my room?
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