Now, I'm paying for it. It may just be my idea, but whenever she sees me -and the other girls in the group- she won't say hi unless I do. Even then, it's quick and typical; I genuinely feel like she dislikes me so much! I know she did like me back then (at least a a person, if not as a guy). Maybe it's just me that she dislikes me now, but that's how it looks. One could guess that she was bitter because of my constant refusal to join them, but trust me, she is not a girl to go without attention.
So, I screwed up. I don't like it, and since I'm aiming to become more social, I'd like to at least get them to be more warm with me - I don't think I committed any crime or anything. What would you suggest?