Spouses and therapists are not the same. He wont give the the stuff your H can
It's awesome you have a H who says ILY often. Some people never hear it from anyone. I think wanting to hear tjat or i care about you from t is expecting too much in the sense that it's his boundary and he is not comfortable with it. If he said it naturally that's one thing but pushing it is another. He's already unsure of how to handle your strong attachment properly.