Same here, I am not a "sociable" person and I like a guy too. I just wanted to say hi so many times but I chickened out because I thought it would be awkward but at the same time I keep regretting it when I miss the chance to say something. The first time I talked to him he did not know who I was(so awkward.) The second time I talked to him he got my name wrong so I felt so bad. Now I did not say anything.