I think you've been incredible naive to be holding hands with a man other than your husband.
I don't think it's naive. I think she likes the attention and is flirting. You've got to be a complete idiot not to realize some of this behavior is inappropriate.
Call it what it is, Nadz. You are immature and enjoying the attention you're getting. You've encouraged it. Suddenly it feels too real and you're finally realizing you've crossed a line.
I hope this means you're growing up.