My friends are saying similar things about my H. I know how you feel.
Also, he might "look happy" on FB, but who knows the truth. Everyone thinks I'm the happiest person on Earth when they see my FB pictures/posts, but they have no idea of how much I've suffered. The ones who know about my sitch think I've successfully moved on. So don't worry about this.
I agree that you must focus on taking care of yourself--not only now, but always.
