Girlfriend Behavior Change - Cheating?

Ok, I'm not looking for everyone to just jump in and say YES she's cheating. I am looking for answers that have a bit a merit and are thought out.

Here's my situation.

My girlfriend 1 month ago changed her days at work because she says %26quot;They need more help on these days%26quot;

That would be a valid reason except she complains all the time about how she really wants to quit. Why would she want to help a store that she really doesn't want to work at?

She has gone out to lunch %26quot;With the girls%26quot; several time in the last 2 months, which she has never done in the 4 years we have been together.

And in the bed room she has just added an %26quot;entry point%26quot; Ha Ha. that was never an option in the 4 years we have been together. Not sure if there are more things I am missing. What are you thoughts.Girlfriend Behavior Change - Cheating?
I dont think there is anything conclusive in what you say to point to cheating on your g/fs part.The job thing, maybe she thought changing days would make the job more tolerable and not such chore. People complain about %26quot;the job%26quot; all the time. Lunch with the girls? Maybe its just that. Maybe that broached the change in days as well. As for the other %26quot;new thing%26quot; are you complaining? Girls talk you know. Maybe %26quot;lunch with the girls%26quot; gave the urge to try it. I think your g/fs new developement has made you a bit insecure. I think this may be more like whats behind your thoughts of her cheating.