Is it time to really read between the lines?

let him go. he's not worth it; he thinks that the gr is greener on the other side. He's sacrificing his relationship to get a piece from the wife. But she's only flirting with hime because he makes her feel good that another man is interested in her. what will happen is that he will try and she will disappoint him then he will come come running back to you. Don't wait on him; no one should be treated this way. don't let him!