No he definitely told me he wasn't interested, and we actually haven't done anything for a long time. He's just the person I feel the most comfortable with out of everyone I know. I don't want to ask why I'm not an option for him because I don't want to pressure him into saying something that would hurt me, but I do wish I knew.

The mutual crush misunderstanding definitely happened. It's what prompted me to post, really. I could've added more potentially relevant personal details but I didn't want to make the post super long