Also, how is not keeping an ex in your life a sign that you're overly emotional and can't get over a breakup? Keeping an ex out of your life is you getting over the breakup. Also, you can't be envious of someone you keep out of your life. More could be said about the rest of your list, which is just bad to be honest.
I see it as both manipulative (of the ex) and disrespectful to the current. It's one thing to be Facebook Friends, it's another to bring the competition into the dining room. It took me a while to pick up on this. When Harry Met Sally [0] wasn't 100% true, but it's true enough to be a general guide.
Who on earth is in a competition???
(I find that to be solidly awful way to view relationships.)
If you think yours doesn't, you may have an enlightened girlfriend, or she may just not be sharing her beliefs.
Would you be 100% ok if your current had an ex who kept showing up?
- they choose their mates randomly or based on superficial things (so there is no need to stay in touch after a breakup),
- they are horrible people (so the other side does not want to stay in touch),
- they keep finding horrible people,
- they need a scapegoat or are vengeful,
- they are overly emotional and cannot get over a breakup,
- they are overly envious.
(I am in good relations with most of my ex-girlfriends.)