Why is it so taboo to bring up your ex or even mention previous relationships in the presence of your current person of interest? A lot of times you can't help but recall things. In many ways you're following a similar pattern that you followed before...doing things and saying things that you've done before so you reminisce. Just because you share these observations out loud sometimes it doesn't mean that you're not over the one you used to be with. Don't they realize that this time it's a better experience and that's why you're with that person and not with your ex?
I mean I understand where the problem would be if you excessivly talk about your past relationship because that would mean your ex is always on your mind. However the casual mention could be taken as a compliment as if to say "this is why you're so much better for me!"
Why does the mention of previous relationships make people so insecure?