Why does my boyfriend hold my neck when we're walking?

But it's oddly comforting when he holds my neck. It's as if it's his own way of saying "I'm here" but probably it also means something else for him

Hmm... if you're not comfortable tell him to stop. I guess it's just my personality, but I've never found overly dominant behavior attractive in other people. To be completely honest I do let my boyfriend smack me on the behind, but he's not an overly domineering person. I guess we kinda switch it up, but I certainly wouldn't think of us as being overly dominant or submissive on either end.

I only like dominant behavior in Siamese Cats and Shetland Sheepdogs. And it's probably more assertive and in your face demands for affection than dominance and certainly not aggressive.

I don't have a lot of patience for big egos.