Past Tense...

when is it alright to miss an ex?

is it wrong, in the first place?

I always had this rule not to contact, call, txt message, the least, an ex.

There's just no reason for it. What would be your business over the stuffs the person does?

But of course there is a big wall covering this rule, and an even bigger exemption on the other side of the wall (but I'm not going to rant about that).

It's simple, when you miss your ex, you just do. regardless if you're with someone already, or still nestling a broken heart. We miss people, our parents, our friends, our roomates, and sadly (or not really), our exes. It is when we act on this longing that I find foolish.

But it's always a person's call over his emotions, only, when you dwell on something uncertain, remember that the art of flying is not on taking flight, but on the ability of not falling.