I think what's really bothering me is that I'm being the nice person that I am and actually worrying about whether or not I led the guy on by accident or something when I should be "cold-hearted" and not give two stuff-that-comes-out-of-your-butt (pardon my language). I've been told that sometimes it seems like I'm being "flirty" when I honestly think I'm just being friendly.
If he was interested in you, he would have texted you back. I don't think you have to worry at all about having led him on