She's lying or true with me??? help me...?

[Karthik]

She blocked me in fb. But she tell she didn't.
I tried to message her but it fb shows "you don't have permission to chat with this person" what does it mean guys or girls??? And it profile name changed as facebook user.
And then after a day she unblocked me. But she is not in my friends list and when I open her profile it shows add friend. But she told i'm in her friends list. She tells It's my computer fault or it's a facebook bug help me ladies and gentleman if there's any bug like this in facebook. Or she's lying with me..... I love her and trust her a lot but when knowing she lied to me made me feel very sad About myself. I'm confused help me pls. she lied to me or true to me...
There's any bug in facebook for this?
Help me friends...
And why she's doing like this???