Wounded Anaconda

Every story I post on my blog has been approved by the person or persons involved and all are true. I have had first hand stories from the person/persons involved. The stories are being shared cos the party/parties involved sometimes need to see themselves or their situations through other people's eyes to be able to make certain decisions. Here's another reader's story:  My friend was every lady's dream guy. Tall, good looking, smart and quite intelligent. He could get any girl he wanted and he was good at it right from our secondary school days. Fast forward to youth service, we were in the same state, we both got good jobs and started our successful careers. We both got married but my friend never changed his ways of going after any available chic. He  never had time for his wife and jumped from one chic to the other. Then fate dealt him a bad blow,  he was involved in an accident and upon recovery, his "weapon of mass destruction"  aka "anaconda" aka "totoli" (or whatever else it's called) was affected and could not longer function.  He's been like this for a couple of years. The problem now is that my friend's good wife who always had issues with him for his waywardness has another guy playing the role that her husband can no longer play. The "side guy"  is another friend of mine who is equally married. I've tried my best to stop him but he insists that he is only helping a lady in need. He also told me that my friend's wife initially lied to him that her husband was dead but later opened up about his health condition. I'd hoped that learning the truth would deter him but my man is still digging deeper and the relationship is getting more serious. He still says that it's nothing other than helping a poor woman. I feel I owe my friend a duty to stop his wife from carrying on with this evil and dangerous affair. But I'm also sensitive to the fact that she could be lonely sometimes. Telling my friend is not an option, he'll commit either of two things, murder or suicide. Looking at his present life, all I can say is "Life happens" and I'm so confused. Should I spill or not?