Search Results: snooping through boyfriend''s stuff

So my boyfriend has been acting weird lately with his phone. We used to use eachothers phone and look and snoop with no problems.
All of a sudden he's been so weird about it.
EXAMPLE:
Me "can i show you something on google. My phone is in my room can i show you?"
Him GO GET YOUR PHONE
me wtf whats wrong with you
him I DONT GO THROUGH YOUR PHONE ANYMORE SO DONT GO THROUGH MINE
me chill wtf i was just gonna use your google
Him MY LAPTOP MY PHONE AND MY CAR DONT GO THROUGH THEM THEY ARE MINE
Me wtf you let me use your car and laptop all the time whats wrong with you? Your making me suspicious
Him WHAT YOUR SUPPOSED TO TRUST ME HOW CAN YOU NOT
me i was just gonna use your google

So basically this has happened like three times. I don't know wtf is going on. We have dated for 2 years. First of all we used to go through eatchothers phones all the time. It wasn't a problem then. Im not saying it is ok to go through eachothers phones i was never interested in it until now when he's acting weird. Before it was mainly him going through my texts and stuff i would just look at his gallery most of the times and now i can't even use his phone for google while he's next to me. 🤨 i dont want to but i feel like taking his phone and actually going through it. Just cus he's acting so weird and if i mention how suspicious he is being he goes crazy and says im supposed to trust him. But how can i not be suspicious when he's yelling at me and glued to his phone 24/7.

My boyfriend and I have an agreement that we can look through each other's phones whenever we wanted (personally I didn't mind because I have nothing to hide) buta couple of days ago, I decide to take his phone while he left to the store but I was joking around about it until I got bored and decided to look through his texts and I was reading through this one conversation between him and a coworker of his and these texts were from September 2015 and looking at those texts I read, he was flirting with her and then she then found out about me by adding him on Facebook and questions him about it and he admitted that he is dating me and then the girl states that what he was doing is wrong and that he shouldn't be doing this kind of stuff And after he comes back from the store, I stay silent until he noticed there was something wrong and I expressed how I felt about that and I have very mixed feeling about it because one I'm upset but at the same time I'm glad I found out about it now instead of back then and after finding that out I decided to get snooping but I didn't find anything else so I was relieved as well but I'm still upset of course.