I would put myself in the shoes of the spouse that was cheated on because I would want someone letting me know if my husband was unfaithful to me.
also people are killed by the side chick
or diagnosed with a sexual disease
I would inform the spouse and tell them to wait until that person went to work then get your things and go to a relative or friends’ home that the spouse doesn’t know the address to and then plan your next steps
your welcome

Thank you for your comment, Elizabeth.