Girlfriend and I have been having problems, distant, less affectionate and have been trying to work things out. she got a new phone a couple of days ago and asked if I could get all the apps installed and arranged, I said yes and I ended looking at her text messaging and saw a number only and not a name. I read some of the texts and realized that the number was a friend of ours husband. we are all friends and there are having some issues with their marriage. The texts were just small talk nothing juicy but never the less texting back and forth. I confronted her about this and she said that he is just a friend and has talked to him in the past and was trying to keep them together, I said that if his wife knew about their texts regardless of the content she would be furious. I told her that it was inappropriate and I felt that she was hiding this from me. She said that she would end the talks and that she had no interest in him and was sorry and that she only wanted me. Now my question is should I text him and tell him that I know about the talks and would like him to not text her or how should I handle this?