stbxw won't make eye contact??

[acsnow]

Whenever stbxw and I are in the same place among a crowed, I notice that she won't make eye contact with me. If we are alone face to face talking she will. She won't even hardly aknowledge me. Its like I don't even exist . It does bother me. What does this mean exactly? Does she hate me? Does she feel guilty? Does she care about me and does not want me to see it in her eyes? I am sure many of you have wondered the same thing and was just curious as to what your thoughts were.