Someone said ask him, I say not to, I liked a girl in school and she came right and asked me and I froze. Her and might have made a good couple. But as for your question, if a guy makes an idle comment or joke to or around you that's sign. Young guys rarely have game and those who do are looking for something ( you know ). Some guys will show off in your presence such something athletic or academic. Because he is trying so hard to impress you he may not know he " crossed the line " of good acceptable behavior.You have more power and control of the situation than you may know so just try to be patient with him and get to know and learn about him b4 you commit yourself.