I'll be honest - before I was able to watch the first episode (which I set to record in advance because I love this type of thing), I checked Reddit to see what the word was. I was so horrified by what you guys were saying and how perverse it was that I deleted it without watching. Then the 2nd ep recorded and I watched both back to back. 

 I don't know why it would be *that* bad to have the sons on. I think it adds another dimension to it - the sons being weirded out by moms dating guys their own age and having to navigate these relationships. I love it.