So last night I went to a Christmas Eve party at a local pub. So I run into an old classmate there who I had a massive crush on back at secondary school. Anyway, she comes over and feigns interest for a bit, and gives me a quick hug and a peck on the cheek. Immediately after she gives me a strange look and quickly returns to her friends outside after finishing her conversation with my friend besides me (while avoiding looking at me). I don't have feelings for her any more, but I was completely dumbfounded by her odd response and have been bothered by it since. Is there something I might have done that made her, seemingly, recoil?
I guess I won't know without confronting her; but as I hadn't seen her in roughly 10 years, I don't think that's going to happen.