M,
Just send a card. Do not write anything inside of it, just sign it. The card shouldn't be romantic in the least. As long as you are pursuing, he'll know he's got you on the hook and can treat you this way. Once you drop the rope, he'll start to panic a bit himself. After all, he's not exactly a catch for anyone else.

Are you a dog owner? If you walk a dog on a lead and keep tension on it, they will pull like crazy away from you. If you want them to stop pulling, you have to put slack in the lead, even though it feels like the exact opposite of what you need to do! Remember that when you deal with your H. I KNOW it feels counter intuitive- its why many on here fail because they just can't wrap their heads around the concept. It's also why I wanted you to read Train's posts. Did she make mistakes? Yes, but mostly she got it right. She was able to detach from her H and stopped trying to pull him back. Once she did that, he stopped pulling away.

-HS