Bond hit the nail right on the head. They need to feel like he is losing you. That's it. There is no other way at this point. Is it a gamble, sure. What do you have to lose???
And please STOP THINKING THIS IS YOUR LAST CHANCE. It doesn't exactly work that way.
Now, I know the half hug!!! Your H and my H must have come up with that one together. Yup, give him the same half hug and pat him on the back. They flinch. It's almost hysterical. They expect you to make it more than the half hug then when they get the friendly pat, they are not sure what to do with that at all!
You are going to be ok. Keep telling yourself that. You are going to be ok. Your other plan about running to have lunch. I like it.