You know what's funny is that I doubt very much that DH would like to hang out and be buddies with your ex.
Homegirl is definitely warming up to a good old fashioned a$$ whipping. I definitely wouldn't have patience for her or her friendship.
I totally agree that it's not good to have an ex around that is showing flirtatious behaviour. She will be just waiting to lend a shoulder or an ear and hope to open that door wider so she can enter and do more damage.
Holla if you want us to deliver a good a$$ whipping her way. I have no idea why some people have to be that way.
Lemme tell you I am damn sure if the shoe was on the other foot hubby would so not want your ex around.
Years back I ran into a high school boyfriend (nothing went further than a few kisses between us). He has taken over his dad's body shop business. Anyhow he gave me his card and said if we every needed any body work or a car towed to call him. I mentioned this to DH and oh boy did I see that demon light up in him. He clearly told me I rather pay a million dollars than take a discount from your ex. You can throw that card right in the garbage. Boy was I shocked. I asked him what did he have to worry about being as we have been together a million years while the ex had only gotten a kiss and never sampled any goodies

He just walked out the room.
So you can see how tolerant a man would be if the shoe was on the other foot. Mind you my ex is with a girl and has a child with her and all that good stuff. Hubby wasn't interested in a thing to do with him...lol