<human>: Through catching glances of chat clients that are subsequently quickly minimised etc, i am fairly certain my girlfriend is having some sort of emotional affair or something she wants to hide with a friend.  Additionally, recently she has not been showing me any affection, and takes her phone with her everywhere she goes.  

I have trusted her for 3 years without ever having a single doubt, but this is all very out of character.  Can I just outright ask to see her chat logs with this individual?  I just feel that if I ask she will get defensive and turn it around claiming I have trust issues.  Not knowing is making me resentful.

Can you condense the text into a few key points?
<bot>: see title, want to ask gf to allow me access to her personal conversations, don't know what to do.