SCREENSHOTS

So girls my phone broke and my boyfriend gave me his old phone to use and was out of boredom looking at the gallery in the phone and came across screenshots of a convo we had about a week previously the content of the convo was me blowing up his phone i was going mad that he hadn't contact me and he explained he was sick and his phone had been broken, but its been on mind as to why go behind my back and send theses screenshots am i over acting does everyone do this in relationships...? Plz help