Often when my girlfriend comes into the room, I will quickly hide what I've been looking at on my phone.
I'm not looking at anything bad and there's nothing on the phone that would be considered suspicious.
I know it's unusual to ask about your own behaviour but I can't quite work out what I'm doing here and why it's only with her and with no-one else.
She noticed that I did this once and I felt bad about how it looked so I volunteered the code for my phone (my idea) in case she ever wanted to look at what's on there. She's never taken that option.