Ok I am new to this forum but here we go,

I have liked this guy for about 2 years, but i have never had the guts to make a move, we hardly talk but I know he has noticed me, he waves, talks (kinda shy) and I have caught him looking at me more then once. My friend texted him using my phone once and he texted back, I then texted but he never texted back, should i be worried this is a bad sign? I am sooo embarresed becuase I am very shy. what should I do???