Should I still consider leaving my boyfriend for good?

About a week ago, I caught my boyfriend in with another woman. They weren’t having sex in that moment but I’m sure they did. A I ended up finding out that they had been talking, going on dates and planning dates as well as having sex for months. He hasn't spoken to her in a week. I read a message he had sent her right after he incident happened of him saying they were going to have to chill and be separate for a while and all that tells me is that he’s just waiting for this situation to die/cool down for him to start speaking to and interacting with her again. We are like roommates now. We haven’t really spoken or talk since it happened.

Should I still consider leaving my boyfriend for good?
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