How do I confront her about lying?
My ex-girlfriend and I are slowly getting back together. We stay at each other's house, share computer, house keys, etc. We had comeback to her place from a weekend together and I checked my email. There were browser screens already open (she forgot to close her websites and shutdown) about a visit to see a former lover: open email from him about the plans; booked flight itinerary; confirmed hotel receipt, romantic-things-to-do pages, etc. I looked in the browser history and therein were other visited sites about the trip. At first I thought it was a passive way of letting me know but I really think she forgot to close down the computer. She said she was just visiting hometown friends/folks. I asked a few more times but got a combative, restless response about 'just seeing friends'.
How do I confront her? I feel like I was snooping... like reading a diary. This is not so much about the lie, ex-lover, or getting back together - that's certainly NOT happening anymore - but am I not valid in approaching her given how I discovered this? And whether I am or not how do I confront this?