Eyes mean everything?

now the point is that he is my best friend (boy) and we flirt like today....4example : we were in table today and every-time i look he was staring me and see me with his green eyes grgrgrgr :S ♥♥♥♥♥♥ and provoked me..........what does this thing mean + he give me a love song in my facebook......with love lyrics .....i don't know what to do with him anymore sometimes i think he like me just like a friend sometimes i think he like me more im confused give me 1answer pls ppl i need someone to learn me smth