After reading Noddy's post and also reading up on Florida divorce law, the fact that your husband went on dates seems moot. Adultery is not a cause for divorce in the State of Florida and to say he was adulterous (or to even prove he was adulterous by way of a PI) would mean nothing of legal standing when being granted a divorce. In other words, I doubt a judge would even care.
If he is playing the field, sowing his wild oats, coming back to your home ever so often, why do you put up with it? Why don't you pack his belongings and set them on the doorstep and let him know he is no longer welcome in what was once your marital home? Have you thought about filing for divorce yourself?
You are allowing
yourself to be trod upon and the only person who can stop the trodding is you.....