Having a problem with a girl at church

People at my church seem to dislike, ignore and try to get away from me, especially this one girl who was about to leave on a trip so this was her last week at church for a while, so at the end of the service she went around to everyone in the room and hugged and said goodbye to them. She did this with everyone except me. Why is that? Why would she just completely pass over me? And when I walked out to say bye she just ignored me. I have asked in the past if I did or said anything to upset or offended her but she said no everything is fine. Then why does she just ignore and try to get away from me?
Also, she seems to be out of town a lot lately and skipping church meetings. I am wondering if she is out of town as an excuse to get away from being at church groups because she wants to get away from me?