Dear ______________,
I can’t remember a 4th of July celebration where I had so much fun! What a great crowd of family and friends. It was so wonderful to reconnect with you and so many others that I hadn’t seen in such a long time. I think we should make a real effort to get together more often. Let me know if you and your wife are up for Happy Hour and a movie next week. It’ll be our treat!
(YOUR NAME HERE)