I just broke up with my boyfriend cuz he thought I cheated on him, what should I do?

We recently broke up like an hour ago , he talked about another girls so I just mad and send him an old picture of me and ex to him and he thought I was cheating on him when it’s actually before we together? What should I do? I’m so down for him and want to have a baby and marriage but it ended cuz misunderstood?
I just broke up with my boyfriend cuz he thought I cheated on him, what should I do?
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