I became convinced my boyfriend was cheating because he had started guarding his phone. One night while he slept, I checked it.

I found nothing. No secret woman, no suspicious messages. What I did find was a group chat where he was planning a surprise trip for my birthday and trying to keep me from seeing it. I ruined my own surprise and violated his privacy at the same time. I acted shocked during the trip. He still thinks he successfully fooled me.