Without a specific example of what action you're trying to tag, nobody can know what to suggest. If you can't find it searching the tag list, is the action found in enough posts to matter and thus warrant a new tag?
Posted under General
I think he means something like post #640237 or post #549918, but with the hands more towards the side of the hips and not on the butt/small of the back. I can't for the life of me find a picture that quite matches the 'Platonic ideal' version of this pose I have in my head, but it seems like it shows up fairly often in a mutedly romantic sort of setting.
If that's correct, I'd go with holding_hips (or maybe hip_hold) over touching_hips.