Bright, My what a busy vacation! I'm glad you went and had a great time and you were able to spend it w/friends, son, his gf and even your h.
I agree w/bustingout that your h knew you were going to be there and yet, he did spend quite a bit of time in your presence. I also think he got too comfortable w/being around you and it hit him so suddenly that he had to get up and leave quickly. This happens to a lot of them when they find that their heart and soul are melting just a bit. He's still got a lot of things to work out in in heart, soul and mind before he can truly see clearly once again.
Keep the focus on you and be proud of how you handled yourself on this trip. You were fantastic!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.