How do you move past

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Hi! Could anyone give me advice please?
So my husband and I split about 8-9 months ago. During the process we became friends again I thought and fell in love again. Fast forward to now, we have been trying to move past the months, but how do you get past the hurt? The betrayal that you feel that he basically made another family while away? Like how do you move past he basically made a new life while gone, but still was coming back to you for sex?