We attended Nov. 2014 EMS Weekend. She was still involved sexually and intimately with her AP at the time. After the third time of her repenting and swearing it was over, I kicked her out after catching her at his house after Valentine's day.

She repented again, and I eventually let her return (too soon). Though, she continued to contact him until July of last year, when she finally repented fully. To my knowledge, that was it. Since then, we have been healing wonderfully. Our marriage was better than ever. I hadn't even felt a need to look at her phone since last February. I no longer had twinges of doubt about her motives, actions, thoughts... 

Suddenly, last week, something seemed off. I asked to see her phone. I found deleted pictures of her with a new man. She has admitted to sexting with him and at least one other she met on social media. This time, I see no signs or hope of repentance. She needs to deal with the hurts of the past... Separation seems like only option apart from divorce. But she won’t leave. She is blaming me for my past sins again.

I think I can forgive again, but she isn't taking any responsibility for this, nor trying to turn back to God.

What do I do? We can't continue like this. It's not good for me or the children (5 of them). Is it finally time for divorce if she won't leave?