You should be asking her, not us.
Why is my girlfriend suddenly avoiding me? Feels like she's giving excuses to not meet me?
Because im with your girfriend now
A very wise man once said - "You should be asking her, not us."
Ask her
You did something stupid.
There’s a lot of reasons I can think of, but we cannot tell through the internet. You even gave no details. You’ll have to confront her about it.
I don't know. What did you do? Whatever it was you better send her some flowers and an apology note.