Why did my boyfriend get mad when I accuse him of cheating?

Anonymous
I don’t know what’s going on with my boyfriend phone but he never wants me near it. There was this one female coworker he lied to me about hanging out with. I understand he might’ve hid it from me because I might get jealous but to lie about it made me uncomfortable. I never knew about it until I seen it with my own eyes. That was like two months ago and I let it go. He was on his phone few days ago while we were out and I made a joke like “you’ve been messaging your other girlfriends all day.” I was laughing when I said it but he still got mad about it. He even offered me to let me see his phone.
Why did my boyfriend get mad when I accuse him of cheating?
15 Opinion