Thank you so very much for this thoughtful response; it means a lot :)

I truly don't know if I did the "right" thing or not; I DO very much miss him

We broke up mostly because it just wasn't a viable situation for either of us

The geographical distance, yes, but mostly his three adult children who, for a variety of reasons, still live with him

It's kind of like: right person, wrong time which sadly happens all the time

I would like to still think that I could perhaps see him before I leave for the UK, but I guess we'll have to wait and see how it all unfolds from this point...