Hey, girls, I need your advice.?

Me and this girl felt an attraction for each other, though we never admitted it (it was obvious). We texted during the winter break, but then we started to get farther apart. I don't let people get close to me so I blame myself for that. We are totally cool during school but she never replies my texts anymore. Yesterday, she posted from her phone that was bored, so I told her to text me but never did. I expected that but still, why would she be doing that?