Most Helpful Guy
Sounds pretty childish
Most Helpful Girl
Are you sure you're 18-24? It sounds like very childish behavior.
Nevertheless it can be interpreted as to having a thing for you. His way of showing is kinda disturbing though. On the other side it doesn't really seem like you're flirting with him, so yeah, I think he's testing the waters and you need to be a little more offensive if you want something to happen.