Dream: I have had a recurring dream for the past 15 years about a man I loved twenty years ago. In the dream sometimes I'm begging him not to leave me and other times he is begging me not to leave him. We love each other very deeply in the dream no matter what is happening. There are always a lot of people around and we are trying to get to a private place to talk - which never happens. Someone always interrupts and we are separated. There is more but that's most of it. I can control where the dream goes sometimes and when I wake it stays with me for hours. When I'm awake I have no interest in seeing him and I'm not in love with him. I'm a happily married woman!!!
Interpretation: Despite the fact that you state that you are happily married - your subconscious - is saying to you that you long for the type of connection - relationship - or fulfillment - you found in times prior - with the 'guy of your dreams'.
The fact that you do not desire to be with him in reality - means that you are a person - who thinks things through - and operate according to what you 'intellectualize' is the right thing to do - rather than - the thing that would bring you most pleasure or fulfillment.
You stated in your post - however - that this relationship - had its share of issues as well. In the old relationship you had to vie for the 'dream guy's attention' due to unpreventable distractions. You also stated that there were many people - who interfered with your relationship - or so you internalized it to be that way - because you said you both sought private time alone - and - could not find any.
For this reason - I suggest - you examine your marriage - access what emotional needs you have - that 'dream guy' met and hubby seems to - unknowingly neglect. This is the solution.