How to find out if my boyfriend is sending cheating messages to someone else?

I’ve noticed he hides his phone screen and gets jumpy when I walk by-already tried talking but he just accused me of being paranoid. Any discreet way to see if he’s hiding something?

Hi Ava, what worked for us was using an app like Eyezy—it helps monitor messages discreetly so you can see what’s really going on without confronting right away. It gave me peace of mind, whether there was something to worry about or not. Just make sure to check the legal and ethical aspects based on where you live!