Exes Questions......?

Personally if your partner's ex isn't in your close set of friends or aquaintances or doesn't have kids with your partner, then there is no need to even see or speak to each other again.

I'm a divorcee with three kids and a new partner and if my ex was behaving in that manner I would say something or avoid contact with him except for things relating to the children.( in fact i had to for some time after the seperation ) I'm pretty sure my current partner, if my ex were to behave like this, if he didn't feel my tactics of keeping my ex at bay were working he may step in and say something himself. Personally I think it's down to your partner to be firm about that sort of thing if they are committed to you. They broke up so its down to your partner to be firm about it.

Besides, they are usually ex's for a reason

A person should be allowed to have a past. If there is something bothering you about the way the act when they are together then you have a right to address it. If it makes you feel uncomfortable then you must communicate that idea first and if it continues it will only agitate you more and you should then move on.

as a female I have had and do have several exes as my friends but the minute they try to flirt i cut them off myself. talking about the past isnt such a bad thing it just depends on what part of their past. if it bother you extremly bad you should probablly ask your other half to stop and explain that it makes you uncomfortable and you dont like it. but beware telling or even asking someone to stop talking to someone (especailly if they are good friends) could go really bad or really good!