@Mrblueskys I bought the pen before I told dh, but I told him before I injected.
It was a bit of a weepy conversation where I explained to him my cravings and food obsession, my feeling of helplessness, I am 55 and told him I thought I was seriously heading toward being disabled or worse. He listened, was a bit shocked but was then supportive.
I explained how they worked, how I still had to do the work of staying in calorie deficit and their might be unpleasant side effects but I was so concerned about my health now I felt I had to try it.
I also told him I was embarrassed and felt ashamed by my weight, my weaknesses and needing this drug to help, and I didn't want anyone else to know. Not even joking, and if the subject ever came up I would need him to keep it between us and play dumb even to your parents or family. Maybe help him with what to say that isn't too awkward for him if anyone does ask when they see the weight coming off.
I would hope if you explained all that (or your own feelings and circumstances) to your dh he would absolutely respect your privacy and support you. Very few, if any, of us here are doing this because we have a happy relationship with food.