Confession of Husband sneaking her wife’s phone

I (35M) have been with my girlfriend (30F) for 5 years, and we have a beautiful child together. Last night, while we were upstairs in our gaming room, our usual hangout place after our kid goes to bed. I realized my phone was missing. I went downstairs to search for it and found her phone charging in our bedroom. It was unlocked because she’d left an app open.

I had only snooped through her phone once at the start of our relationship, but recently, I’ve had a gut feeling she’s up to something because of her strange phone behavior. I decided to seize the moment and take a quick look. I don’t know the best way to go about this, so I just opened a few social media apps. Before I could dig deeper, I heard her sprinting down the stairs like she was competing in the Olympics. I kept looking while she stood there, and she immediately demanded, “What are you doing?” in a furious tone. I told her I just noticed the phone was unlocked and had a quick look, then handed it back. She stormed back upstairs.

I kept looking for my phone for about 15 minutes before finding it and heading back upstairs to continue gaming. Less than half an hour later, she decided to call it a night. But before she went to bed, she threw her phone at me and said, “Here, have a proper look if you want.” I refused, saying I was fine, but she went ballistic. She accused me of sneaking through her phone and got super defensive, telling me I should just ask next time. Her over the top reaction and defensive behavior made me even more suspicious, even though I only checked two social media apps.

Should I be worried that she got so insanely defensive? I know snooping is an invasion of privacy, but I always leave my phone unlocked and have caught her going through it multiple times, which I’m fine with because I have nothing to hide. Her wild reaction and the massive argument that followed only fueled my suspicions.