I introduced myself to my friends boyfriend and she started laughing nervously?

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I have been sitting with this girl and her friend for days but for some reason her boyfriend does not sit with her but this day he was. So I went up and introduced myself to him, she started laughing and her boyfriend asked why she was laughing and I asked why she was laughing. She said "I dont know" Well anyway, her boyfriend asked me if I had a girlfriend and I said no. He then he asked if I was looking for a girlfriend and I said no not really. The girl was laughing nervously and right after that when the teachers came in she said see ya and started walking away real fast to go to the library. He went back to the table he normally sits at. Was he trying to see if I was interested in her? I kept telling everyone that I did not have a crush on anybody. Also For a girl who has a boyfriend she seems really interested in my personal life. She asked me numerous things. "Do I have a girl friend" "Do I have a crush on anybody" "Do I have a valentine" Asking me if I still liked the girl I used to like. "Seems jealous of me hanging out with her best friend." She also said that my name said like this sounds like a superhero "Ronnie Wade." WHAT THE HELL IS GOING ON WITH THIS GIRL I CAN NOT FIGURE HER OUT?