Cheating wife

I (M46) and my wife (F40) been together for 21 years and married 14 years ago. We have 3 kids and everything seems fine as she is a Christian and prays alot. I was happy and believed I am lucky to have her as my wife. 5 years ago she started working with a colleague who referred her to the job as they were introduced by a friend. As time goes by they became close and I warned her about 3 years ago that most male friends are always waiting for an opening and that she should be careful, she told me he loved his wife and not someone like that. Last year I started suspecting something is going on and I decided to hacked into her phone to listen to their conversations and confirmed my suspicion. I confronted her and she denied but I gave her a few proof from my archives o g many before she admitted but said they haven't been intimate yet. I was out of the out for a week and because I love her so much I couldn't tell anyone. I forgave her and she promised to stop communicating with her BF. I have her some time and started following up again and discovered that they continued where they stopped, they only went low key for a while. I even oberheard her telling him about me and how she denied my sex and all. This time I involved her mom and pastor, and also informed the bf's wife by sending the screenshot of the i love you message her husband sent to my wife with his number showing. A lot of back and fort as I was determined to move on, but the mum cried and begged me that of her 3 daughters she's the only one still married. I love her foolishly and my kids are my life. I ponder over everything and I forgave her again. Today, I noticed they have started communicating again! I have a lot of thoughts going through my head but I don't want to make a bad or silly decision. My kids are of major concern to me and I your advice and opinions please.