Should I be mad at him?

i know this is partly my fault but I mad a fake plenty of fish account and sent my boyfriend a message I pretended to be another girl. I often see him go online because he gets emails if someone sends a message , anyway I did and he goes online and checked it. I didn't see if he wrote back because I forgot the username. But I asked why he went on there and if he got a message and he said no he clearly lied to me I didn't tell him that I knew I just am mad he lied I don't if he replies but still mad he lied
Should I be mad at him?
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