Divorce

What are your thoughts on a person who spouse cheated but will not sign the divorce papers. ? Then says when dating other ppl it's a problem and nobody stays bc the person is still legally married. What are the odds that you was friends with this person 11 years ago and you just seen each other for the first time in 11 years and you mentioned that your spouse did the exact same thing. You feel a vibe and tell the person you feeling them but their response is they got respect for my marriage bc I'm still with spouse unhappy. They left their spouse but still legally married. So what are your thoughts if you feel like u want more from the connection