Bright, I'm glad to see that you are making more friends and they want to go w/you to the vacation home. The more you open up, the more people will see the wonderful person that you are.
As for your friends being friends w/your h, you can't control what they do. At least they are remaining mutual and being friendly w/both of you. It's normal to "expect" people to take sides when it comes to a situation like you are going through, but unless you or your h do something to hurt their feelings, they will remain mutual and both you and your h can enjoy the time you spend w/them. I would hate to see you opt not to be friends w/them because of this. They've been there for you and continue to be there for you, you just have to be careful what you tell them just in case they tend to talk about you and your life.
Who knows, once you begin taking your new friends to the vacation home, your old friends may opt to step away and leave you alone. Time will tell on how they react to all of the new people in your life.
Keep up the good work. Sounds like you are detaching more and more each week.
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.