Should I forgive my boyfriend for his lie?

there’s this girl at his workplace who asks him why he was not at work, as my boyfriend took a day off. So i told him to block her because it seemed suspicious. Then he said okay I will block her. He blocks her infront of me. He said she’s also married. Then fast forward, two weeks later. Yesterday I told him to show me his phone, and show me their convo. Turns out he unblocked her and then unblocked her again just before showing me the chat. And he revealed she was in fact single. He said he unblocked her because she was harassing him at work and she was talking to coworkers about him blocking her cuz of his girlfriend. He also said he knew I’d be mad so he lied about her being married and blocked her cuz I would act crazy. What do you think. Then he deleted her

Should I forgive my boyfriend for his lie?
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