if they broke up with you, move on. If you broke up with them and they flirt with you, flirt with them back
Depends on what you mean by 'deals with'. Ex's can still be mates. I know plenty of people who are ex's and are still friends
If you still have feelings for your ex then let him/her know that, then you both decide if you still have a chance togther.
ask them
it can be possible for an ex to still love you after a year of the break up...i know i still love my ex and its been about 2 years
If you still think of your ex-boyfriend and talk about him that means you ain't over him. If you continue to hate your ex that means you still got feeling there.
only if you tell him
if he has messages from her, or talks about her.
If she tells you.
ask him
if they are not threating you you are okay
well if your ex still talks to u and u hate him then say that u have a boyfriend.
You don't, but if she is then that is her problem. It is your ex-girlfriend, you should have moved on.