Further to the context of your sitch, NO BEING MYSTERIOUS! Take that one off your list of things to do.
Detach is about detaching from the outcome and not about not loving your H. Truth is, I think you are already detached, consider the logic in your posts, so I wouldn't worry about focusing on that one, either. I'd personally recommend re-connecting with your H. That may begin with opportunities to just spend time with him, listen to him (without feedback), or just watching TV with him. Unless he asks for space. Then give him space.
GAL in your case would absolutely need to be transparent. Going out? Tell him when, where, and ask if he wants you to bring him anything on your way back. Ask him to tag along. Read. Take up quilting. Go out with people HE trusts. There's many ways you could GAL, that would be completely open and transparent.
