I believe he is going to probably stay with the OW because if he leaves here at 6pm and gets there at 2am I can't figure out where else he would go.
Is it acceptable that your husband and the father of your children is spending the night away from his family and you don't know where he is? Can you verify if he spends the night with OW?
You get your kids to call at 6:00 am on Sat.
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.