<human>: When my girlfriend and I first moved out together I was working a ton of hours making good money so I let her quit her crappy retail job. She had tons of free time and I just felt happy that I was providing for her fully. She started to get distant and we fought more which was incredibly frustrating for someone working 50-60 hours a week with an hour commute in each direction. It gets progressively worse for about a year.

She regularly goes to her parents house each week and I decided to snoop. I checked her computer and found no files or pictures or anything noteworthy until I notice she has a Facebook tab open (she liked to have a LOT of tabs that she never closed).
I found a convo from 6-10 months prior where she was back and forth messaging a guy she worked with about how much she loved him (but shouldn't tell him that) and when is he coming home (was away for school). It broke my heart, but then at the same time I was the one snooping. The last message was her suggesting they take it to cell phones and what was his number.

I reached out to him and he said they just flirted a lot. I spoke with her and it was a huge thing about how "I" invaded her privacy and "I" was not giving her enough attention. She also adamantly says that when they started texting (and he would call her in the middle of the night randomly) that she stopped and said not to anymore because she felt like Facebook flirting seemed fine but that "taking it to the phones" felt too real.

This was years ago, I still want to know what really happened. I don't think I will ever know the truth.

Can you condense the text into three sentences or less?
<bot>: Waited till I knew my girlfriend would be gone, creeped on her computer and old Facebook conversations. The conversations I read and the thought of her cheating still comes to mind from time to time.