The physical distance does feel utterly ridiculous and surreal.I know how that feels. The awkward skirting and maintaining of an invisible barrier between you. Thankfully I think that has mostly been broken down in my sitch.
There is also a mental feeling of discomfort and incredulity because you don't know HOW to interact in the new dynamic. I think part of it is self imposed and you have to allow yourself to physically relax in the person's presence. If you are not comfortable with the "acquaintance interaction" or you want to switch it up, do your part i.e allow YOURSELF to relax, stand your physical ground, let him skirt if he wants to. You are not intimidated, it does not bother you, you are smiling a little mysterious smile because you are a mature adult and you can handle it.
