My girlfriend and I have been together for two years. The other day, while she was in the bathroom, I checked her phone because I wanted to reassure myself that she wasn't texting some guy. She hasn't given me any reason to believe that recently, but I have a lack of trust in her because she's admitted in the past that she likes flirting with guys. And it happened right before my eyes once. I've also been cheated on in my past relationship, so I have trust and insecurity issues. I really wish I could trust her, but she doesn't seem to be doing her part in allowing it to develop.
Anyway, I opened her Ig and found two chats with two guys, but I only read one chat. The guy had replied to one of her stories, and they'd talked about some common interests. He asked her for her number, and she refused. When my girlfriend came back from the bathroom, I asked her if she'd texted anyone in the past few months, and she said no. For a few days, I pretended nothing was happening. Then I talked to her about it and asked if anyone had texted her. She kept saying no, so I told her I checked her phone.
She was rightfully angry, telling me our relationship was over and that her trust in me was destroyed. But after we talked, she said it would be better if we took some time. She said she doesn't know if she can get over the fact that I checked her phone and that she had to lie because she knew I wouldn't accept it, considering that we had several discussions after that flirt. I apologized for invading her privacy (it was the first and last time in two years) and explained my insecurities and why I'd done it.
We both decided it was best to take a month to think about how and if the situation could be resolved. I know I was a piece of shit checking her phone. And I didn't actually find anything wrong, but it upsets me that she lied to me.
I really want it to work out with her. I feel like shit, for checking her phone and for not trusting her. I feel really immature and stupid right now. I've betrayed her trust, and she's betrayed mine. How can this situation be resolved? I almost feel like I'm self-sabotaging. Otherwise, my relationship with her is fantastic. Do you think there's any chance for both of us to grow and evolve together from this point on? I definitely have a lot of work to do. please I would like some advice and explanation, besides just "leave her"
TL;DR, check my gf's phone without her permission, she lied to me, now we're on break